In fact, even though virtually every Republican presidential candidate kissed Trump’s ring, it’s further down the ballot where he has had the biggest financial impact. He gave $5,000 to Connecticut GOP Senate nominee Linda McMahon last year and $30,800 to the National Republican Senatorial Committee (NRSC), the campaign arm of Senate Republicans, which did not return a request for comment.

On the House side, he gave $2,500 to Rep. Ed Royce’s, R-Cal., reelection effort; another $1,000 to Tea Party favorite Rep. Allen West, R-Fla.; and $2,000 to Rep. Peter King, R-NY. And while he’s given to Democrats in the past, including Senate Majority Leader Harry Reid, all of Trump’s donations in this year’s election cycle were to Republicans, including Romney ($2,500) and disgraced former New York Rep. Chris Lee, who resigned after being caught looking for sex on Craigslist. (Trump gave $500, which appears to have been returned.)

Trump has been especially involved with West, whose campaign did not return a request for comment. The “Apprentice” star appeared with the congressman at a Tea Party rally in Florida last April, and West even said he was open to being Trump’s vice presidential pick if the real estate mogul somehow won the GOP nomination. West told Newsmax at the time that he hoped Trump was “very serious” about his presidential bid. West also accepted $2,500 from Joseph Farah, the birther editor of World Net Daily, in 2008. (It’s Farah’s only political donation the past three cycles.)

But perhaps no candidate has closer or deeper ties to Trump than McMahon, who also did not immediately respond to a request for comment. McMahon made her money through the WWE professional wrestling league, which her husband founded.

Trump has been involved in the sport for years, which suits his flamboyant and phony image. Wrestlemania IV and V were both held at Trump Plaza, and a video that made the rounds on Twitter yesterday shows Trump tackling Vince McMahon at Wrestlemania 23. Trump and two beefy wrestlers hold down and restrain McMahon before shaving his head to wild cheers from the packed arena.

Trump’s ties to Linda McMahon became a campaign issue earlier this year when Democrat Chris Murphy slammed his opponent for taking Trump’s money. “That’s right, the man who led the charge to see President Obama’s birth certificate, report cards and test scores has set his sights on Connecticut’s Senate seat,” Murphy campaign manager Kenny Curran said in a fundraising email to supporters in February. The Connecticut Democratic Party even cut a web ad attacking McMahon that featured Trump.

“Mr. Trump, thank you for letting us come to this beautiful hotel and being with so many friends. Thank you for twisting the arms that it takes to bring a fundraiser together,” Romney told the approximately 200 people who paid thousands to attend the event at the Trump International Hotel. “I appreciate your help.”

The Trump event and surrounding controversy overshadowed the Texas primary win that officially handed Romney the nomination, a triumph of endurance for a candidate who came up short four years ago and had to fight hard this year as voters flirted with a carousel of GOP rivals. According to the Associated Press count, Romney surpassed the 1,144 delegates needed to win the nomination by winning at least 97 delegates in the Texas primary.

The former Massachusetts governor reached the nomination milestone with a steady message of concern about the U.S. economy, a campaign organization that dwarfed those of his GOP foes and a fundraising operation second only to that of Obama, his Democratic general election opponent. He outlasted a half-dozen Republican opponents to clinch the nomination later in the calendar than any recent GOP nominee.

Romney must now fire up conservatives who still doubt him while persuading swing voters that he can do a better job fixing the nation’s struggling economy than Obama. In Obama, he faces a well-funded candidate with a proven campaign team in an election that will be heavily influenced by the economy.

Romney will continue his push to raise money with fundraisers this week in wealthy California enclaves like Hillsborough, near San Francisco, and Beverly Hills. He has at least one major fundraising event every day for the rest of the week, as well as a series of smaller events.

But the focus Tuesday was on Trump, who once led polls of GOP primary voters. He endorsed the former Massachusetts governor just before the February Nevada caucuses, offering his support at a morning endorsement event in ballroom in the hotel that bears his name. In the same room Tuesday night for the fundraiser, Trump introduced Romney. He steered clear of the “birther” issue as he spoke to donors, though just hours earlier he had repeated his doubts about the authenticity of the birth certificate that shows Obama was born in Hawaii.

“A lot of people do not think it was an authentic certificate,” Trump told CNN of Obama’s birth certificate. Such allegations have been repeatedly proven false. The state of Hawaii recently re-affirmed that Obama was born there.

Trump’s comments, repeated in several media interviews Tuesday, overshadowed Romney’s attempts to focus on failed stimulus projects and federal money given to companies like Solyndra, the green energy company that received millions from the government only to go bankrupt.

Romney hasn’t condemned Trump’s assertions. On Monday night, he told reporters aboard his campaign plane that Trump is entitled to his opinion. Even as Trump-related criticism from Democrats and Republicans intensified in recent days, Romney showed no sign of distancing himself from the polarizing figure.

“I don’t agree with all the people who support me. And my guess is they don’t all agree with everything I believe in,” Romney said. “But I need to get 50.1 percent or more.”

Trump remains popular among the conservative base and boasts ties to deep-pocketed donors. He has recorded automated phone calls for Romney, hosted a fundraiser with Romney’s wife, Ann, in New York, and pressed the candidate’s case as a television surrogate.

The Obama campaign released a video Tuesday criticizing what it considers Romney’s unwillingness to stand up to Trump and the more extreme elements in his party.

Former House Speaker Newt Gingrich, once a rival for the GOP nomination and now a Romney supporter, suggested that the Trump issue will not derail Romney’s campaign.

“Gov. Romney’s not distracted. The Republican Party’s not distracted,” said Gingrich, who attended the Trump fundraiser. “We believe that this is an American-born job-killing president. Other people may believe that he was born somewhere else and still kills jobs.”

Gingrich was one in a series of rivals who challenged Romney during the prolonged primary fight.

- In case there was any doubt that Romney’s embrace of Donald Trump was a nod to birthers: The candidate released his birth certificate just minutes before a joint appearance with the reality TV star in Las Vegas last night. “Birther queen” Orly Taitz will be pleased, as she told me yesterday that Romney should disclose the document.

Most pundits assume Trump, acting as Romney’s surrogate and fundraiser, is “off message,” but the timing of the birth certificate release seems to add further evidence to the alertnate theory that the candidate is quietly trying to appeal to Republican voters who are still not convinced that Obama was born in the United States, without having to actually say a word about Obama’s birth certificate himself. Why else would Romney unexpectedly release the document last night when no one had been demanding to see it?

Still, budding Romney birthers may point out that it’s not actually a birth certificate but a “certificate of live birth.” Someone call Sheriff Joe Arpaio!

- Donald Trump went on his third televised birther rant in 24 hours last night: After taking his message to CNBC in the morning and CNN in the afternoon, he stopped by Fox News to tell host Greta Van Susteren that he wants “good solid proof” that Obama was born in the U.S. Asked what kind of proof might satisfy him, Trump replied, “Let’s get back to jobs.” And while many speculate the Obama campaign is liking all this birther talk, Trump insisted, “I actually semi-know for a fact that they hate this subject.” At least “semi-know” is closer to a fact than Trump usually gets.

But the Christian Science Monitor’s Liz Marlantes argues the focus on Trump has obscured the “most important meeting” Romney had in Vegas yesterday — with casino mogul Sheldon Adelson, who single-handedly kept Newt Gingrich’s campaign afloat for several months in the GOP primary and could send big money Romney’s way.

- The $1 billion plan: Politico’s Mike Allen and Jim VandeHei are out with a big story today about the “loose network of prominent conservatives” who plan to spend about $1 billion attacking Obama and congressional Democrats this year. The network includes the usual suspects — Karl Rove’s groups, the U.S. Chamber of Commerce and the Koch brothers, among others:

That total includes previously undisclosed plans for newly aggressive spending by the Koch brothers, who are steering funding to build sophisticated, county-by-county operations in key states. POLITICO has learned that Koch-related organizations plan to spend about $400 million ahead of the 2012 elections – twice what they had been expected to commit.

Restore Our Future, the super PAC backing Romney, plans to spend another $100 million, while Rove’s American Crossroads and its dark-money sister group Crossroads GPS will spend a combined $300 billion. Thank you Citizens United.

Last week, Rolling Stone’s Tim Dickenson profiled of some of the biggest donors to the Romney campaign proper.

- What would Mitt Romney’s foreign policy look like? Foreign Policy magazine’s Daniel Drezner sketches out the first year of a Romney administration if the candidate “had to implement every foreign policy campaign promise he’s ever made in every foreign-policy white paper, op-ed, campaign statement, or random utterance that came from his campaign.”

Meanwhile, ThinkProgress’s Ali Gharib points out that while Romney is slamming Barack Obama’s approach to Syria, the Republican has adopted one based on … Barack Obama’s foreign policy approach to Syria.

- Mitt Romney loves “A-M-E-R-C-I-A”: The Romney campaign rolled out a nifty little iPhone app last night with one big embarrassing glitch: It doesn’t know how to spell America. “Here’s how the free app works: You take a photo, then are able to lay one of 14 ‘I’m With Mitt’ banners over the image … The problem? One of the 14 options reads, in fact, ‘A Better Amercia.’ Yes, Amercia,” Mashable reports.

“I’m just a kid that wants to make a difference for America,” Romney weirdly told Fox News in an interview to be aired later this week. I think he means “Amercia.”

- Tea Party victory in Texas: Tea Party-favorite Ted Cruz was able to force a runoff in last night’s Texas GOP Senate primary against lieutenant governor David Dewhurst. Experts who spoke with Salon think the July runoff will favor Cruz, who has more dedicated supporters willing to go to the polls on a hot Texas summer day when turnout will likely be extremely low.

Noting that Dewhurst is no moderate, Steve Kornacki explains the new Tea Party modus operandi:

The Tea Party movement isn’t about purging moderates; that happened a long time ago. It’s about forcing the entire GOP to embrace a partisan warfare style of governance. When it comes to the Senate and House, that means electing candidates who will shun compromise with Democrats and exploit every possible legislative tool to advance their own agenda and stall the other party’s. It is about absolutism.

- Dirty tricks in Wisconsin recall: Milwaukee Mayor Tom Barrett’s (D) gubernatorial campaign was inundated with calls that clogged phone lines and caused headaches yesterday after a mysterious text message went out to thousands of Wisconsinites calling Barrett a “union puppet” and urging people to call his office. The campaign blamed allies of Republican Governor Scott Walker, whom Barrett will face in a recall election next week.

Obviously Blitzer could have cut “beginning to look a little” from his put-down, but those were harsh words coming from Blitzer. Trump had already insulted the CNN anchor’s ratings, telling him, “Frankly, if you would report [the birther conspiracy] accurately, I think you would probably get better ratings than you’re getting, which are pretty small.”

So Obama surrogates Hilary Rosen and Cory Booker were almost universally denounced for ill-chosen words on behalf of the president, but Trump gets to insult not just Obama but an influential cable news anchor on behalf of Romney with no reprisals? That’s the old IOKIYAR double standard at work, but this time, it might actually backfire and hurt Romney.

For his part, Romney refused to either cut ties with Trump or denounce him. And his refusal to do so was a craven exercise in electoral groveling. “You know,” he told reporters Monday night, “I don’t agree with all the people who support me, and my guess is they don’t all agree with everything I believe in. But I need to get 50.1 percent or more, and I’m appreciative to have the help of a lot of good people.” What else will Romney do to get to 50.1 percent? Stay tuned.

Of course, that’s not the first time Romney has refused to denounce or distance himself from a Republican supporter. When Rush Limbaugh called Sandra Fluke a “slut” and a “prostitute,” he merely said it was “not the language I would have used.” When Ted Nugent said “if Barack Obama becomes the president in November, again, I will be either be dead or in jail by this time next year,” Romney simply asked for more civility in politics. When a supporter said Obama should be “tried for treason,” Romney didn’t challenge her at all and later told reporters: “I don’t correct all of the questions that get asked of me. Obviously I don’t agree that he should be tried.” Romney keeps getting served big fat pitches to let him take a swing at a defining moment of political courage, pitches that he could knock out of the park. He just watches them float by.

Maybe Romney thinks he needs the birther loons to get elected. The base isn’t crazy about him. And Salon’s Alex Seitz-Wald reveals that Orly Taitz and Joseph Farah are thrilled that Trump continues to advance their cause. But this can’t end well. For better or worse, independents are likely to decide this election, and birther nonsense isn’t going to win them over.

I’ve probably reached my own personal low when I’m fact checking Trump’s lies, but today he consistently claimed – referencing a Breitbart.com story – that Obama’s “publisher” wrote that he was born in Kenya; in fact, the dubious story makes clear it was his literary agent, in a publicity brochure about her clients. (A former agency assistant quickly took the blame for the mistake and said the information didn’t come from Obama.)

Also, when talking about the agent’s brochure to the Daily Beast, Trump said it was a mistake made by a young man who “didn’t know he was running for president, so he told the truth.”  But when dismissing Blitzer’s reference to the Honolulu Star Bulletin’s Barack Obama birth announcement just days after he was born, Trump argues “many people put those announcements in because they wanted to get the benefit of being so-called born in this country.” So his parents knew enough to fake a birth announcement, but the young Harvard Law Review president threw all their hard work away to sell a book? Uh oh, I’m trying to find consistency in a Donald Trump argument. Time to close. Romney owns everything Trump says, and it will cost him in November.

The Breitbart.com empire must be proud Trump is using their story as “proof” of his birther nonsense. Even as they printed the allegation, they stressed that Breitbart himself didn’t support birtherism, and they insisted that they only published the story about the agent’s brochure just to prove the media didn’t vet Obama. Let’s get this straight: So they’re chiding the media for not publishing something that they themselves believe to be false. That’s awesome journalism.

In related news: Regarding the revival of Trump birtherism, I said Friday on “Hardball” that Breitbart’s journalistic proteges were “bottom feeders,” and one of them quickly proved it.  I appreciate all the support I got on Twitter, but to me it was a dog bites man story, and utterly predictable. (I apologize to dogs everywhere for that unfair comparison.)

I talked about how Trump hurts Romney on MSNBC’s “Politics Nation” Tuesday afternoon:

Visit msnbc.com for breaking news, world news, and news about the economy

Orly Taitz, the dentist cum lawyer cum California Senate candidate who has filed numerous colorful lawsuits challenging Obama’s birth certificate, is thrilled. “Romney is correct, this is long overdue,” Taitz told Salon. “I do believe that the Romney campaign is sending a message that they are questioning Obama’s eligibility.”

Joseph Farah, the publisher of the conservative news outfit WorldNetDaily, which devotes the vast majority of its time to advancing new grist for the birth certificate mill, agrees. Farah sees the campaign’s use of Trump as a subtle way to appease what he sees as a surprisingly large voting bloc who still have doubts about Obama’s birth, all without making the candidate actually say it himself.

“Trump, whether he’s out there publicly talking about eligibility or not during the campaign, because of what he’s previously said and done on the subject, has already won the hearts and minds of people out there who are suspicious about this, so they associate Trump with suspicions about Obama’s story,” Farah told Salon.

“So that will help Romney solidify a base that he desperately needs to carry overwhelmingly, and Romney doesn’t need to say anything,” he said. In a sense, they’re “doing each others’ bidding” — Romney gets to associate with the issue while Trump gets to be Trump.

Farah said as many as 50 percent of Americans have doubts about Obama’s story, while Taitz pointed to a dubious online poll which found that 99 percent of Tea Party supporters do not believe that Obama was born in Hawaii.

Though a recent YouGov poll found the number of doubters to be about 25 percent, Farah may have a point about Romney’s need to appeal to skeptical arch-conservatives who really hate Obama. Sen. John McCain (R-AZ) strongly repudiated the birthers in 2008, but as Trump himself tweeted today, “@BarackObama is practically begging @MittRomney to disavow the place of birth movement, he is afraid of it and for good reason. He keeps using @SenJohnMcCain as an example, however, @SenJohnMcCain lost the election. Don’t let it happen again.”

Still, Trump may not be an ideal advocate for the cause, Farah acknowledged, saying his characteristically flamboyant and self-centered approach to pursuing the issue is not always the most informed. “Does Donald Trump know all that stuff? I don’t know,” he said.

Though neither said they’ve been contacted by the Romney campaign, Taitz said she has been invited to two Romney fundraisers by their hosts, including one who was a Bush-era ambassador to Spain.

Meanwhile, Taitz called on Romney to release his birth certificate as well (he has not, so far), and she has said both vice presidential candidates should, too. “We have to be consistent,” she explained.