WASHINGTON, DC - JANUARY 06: Pro-Trump supporters storm the U.S. Capitol following a rally with President Donald Trump on January 6, 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. (Photo by Samuel Corum/Getty Images)

(AP) – An upcoming hearing of the House committee probing the Jan. 6 insurrection is expected to examine ties between people in former President Donald Trump’s orbit and extremist groups who played a role in the U.S. Capitol riot. Top leaders of the Oath Keepers and Proud Boys have been charged with seditious conspiracy in the most serious cases the Justice Department has brought so far. At least two men close to Trump — longtime friend Roger Stone and former national security adviser Michael Flynn — have known contacts with far-right groups and extremists who, in some cases, are alleged to have been involved in Jan. 6.