Mueller has seen Papadopoulos plead guilty to lying to the FBI regarding his exchanges with the Russians throughout the election, which were decidedly aimed at arranging a meeting between President Trump and Russian President Vladimir Putin.
Papadopoulos, according to reports, is now cooperating with special counsel Mueller, who has already indicted three other former Trump campaign members during his investigation.
Lieu, the California lawmaker, is part of the House Judiciary Committee, and has interviewed former Trump campaign associates regarding their knowledge of any communications that were had with Russia.
Lieu has adamantly come to the defense of Robert Mueller’s team, despite relentless and mostly false accusations and criticism from Republicans. The congressman has also expressly warned Trump of the political ramifications that firing the top investigator in the Russian probe will have.