Democratic U.S. Sen. Elizabeth Warren says Attorney General Jeff Sessions should resign and she is calling for an independent special prosecutor to oversee the Justice Department's investigation of Russian interference in the U.S. election.
Warren was joined Thursday by fellow Democratic Massachusetts Sen. Edward Markey and the state's entire all-Democrat House delegation in calling for Sessions to resign.
Warren, who has clashed repeatedly with President Donald Trump, reacted in a series of tweets to reports that Sessions talked twice with Russia's ambassador during the presidential campaign.
The White House says Sessions met with the diplomat in his capacity as a then-U.S. senator, not a Trump campaign adviser.
Warren tweeted that Sessions should never have been confirmed by the Senate and the controversy surrounding Sessions was a threat to national security.