U.S. President-elect Donald Trump picked three conservative loyalists to lead his national security and law enforcement teams on Friday, underscoring his campaign promise to take a hard line confronting Islamist militancy and curbing illegal immigration, Reuters reported. Trump picked U.S. Senator Jeff Sessions for attorney general, rewarding a staunch supporter whose tough and sometimes inflammatory statements on immigration have reflected his own. The choice was applauded by the top Republican in the Senate but drew criticism from civil rights activists. Retired Army Lieutenant General Mike Flynn, who has championed Trump's promises to take a more aggressive approach to terrorism, was chosen as his national security adviser. Trump picked Representative Mike Pompeo, a vocal critic of the Obama administration's security policy, as director of the Central Intelligence Angency. The three choices, announced by Trump's transition team, come as the Republican president-elect works to fill key positions in his administration, which will take over from Democratic President Barack Obama on Jan. 20. Sessions and Pompeo seem likely to be confirmed by the Senate despite heavey resistance from Democrats. Republicans will control a majority, with at least 51 seats in the 100-seat chamber, when Congress reconvenes in January. Flynn's post will not need Senate confirmation. One of the earliest Republican lawmakers to support Trump's White House candidacy, Sessions opposes any path to citizenship for illegal immigrants and was an enthusiastic backer of Trump's campaign promise to build a wall on the border with Mexico. He has also argued for curbs on legal immigration on the grounds that it drives down wages for U.S. workers. A former Alabama attorney general and U.S. attorney, Sessions, 69, has been in the Senate for 19 years. Allegations that he made racist remarks led the Senate to deny his confirmation as a federal judge in 1986. The chamber's top Democrat, Chuck Schumer, said he would want Sessions to answer "tough questions" about his civil rights positions. The attorney general acts as the country's chief law enforcement officer and head of the Justice Department. Civil rights groups slammed Sessions as a poor choice to head a department charged with protecting voting rights and running immigration courts. "How can we trust someone in that role who has demonstrated he thinks all forms of immigration are bad for America?" said Beth Werlin, head of the American Immigration Council. Senate Majority Leader Mitch McConnell said he strongly supported Sessions for attorney general, calling him "principled, forthright, and hardworking." Sessions has been one of Trump's most enthusiastic backers on Capitol Hill and the president-elect has hired several of Sessions' staffers, including policy chief Stephen Miller and Rick Dearborn, who has a top job managing the transition. ISLAMIST MILITANTS Flynn, one of Trump's closest advisers, was fired from the Defense Intelligence Agency in 2014, a move he has attributed to his outspoken views about fighting Islamist militancy. Other officials who worked with Flynn cited his lack of management skills and leadership style as reasons for his firing.