Sen. Bernie Sanders, the populist who challenged Hillary Clinton from the left in the presidential primary, laced into President-elect Trump Tuesday for failing to live up to his promise to “drain the swamp” in Washington by breaking his promise to keep lobbyists out of the GOP-run White House.

Sanders, I-Vt., teamed up with Sen. Sheldon Whitehouse, D-R.I., Tuesday to rail against Trump’s decision to allow lobbyists and wealthy corporate interests on his transition team. The pair also took Trump to task for his remarks during a CBS News “60 Minutes” interview in which he appeared to reverse himself on his pledge to deny lobbyists jobs in his administration.