George W. Bush supported the assault weapons ban before he let it expire. From the Progress Report:
"In 1999, then-Gov. George W. Bush supported the ban on assault weapons, saying 'it makes no sense for assault weapons to be around our society.' In 2003, then-White House Press Secretary Ari Fleischer said that Bush not only 'supports the reauthorization of the current assault weapons ban' but would 'work with Congress' to make sure it remained the law. But during his presidency, 'Mr. Bush has never once demanded that his G.O.P. leaders cease playing first responder to the demands of the gun lobby and take the initiative' to extend the assault weapons ban. When the clock strikes midnight tonight, military assault weapons will -- once again -- be freely available across the country."