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Luis De La Calle

Crowds gather outside the U.S. Capitol for the "Stop the Steal" rally on January 06, 2021 in Washington, DC. Trump supporters gathered in the nation's capital today to protest the ratification of President-elect Joe Biden's Electoral College victory over President Trump in the 2020 election. (Robert Nickelsberg/Getty Images)

U.S. could face a simmering, chronic domestic terror problem, warn security experts

Luis De La Calle