Senate Majority Leader Mitch McConnell (R-KY) on Monday called on Alabama Senate candidate Roy Moore to step down following a report from The Washington Post that he initiated relationships with teens decades ago.

McConnell, who opposed Moore in the primary, added that he believed the women’s allegations.

Now, Moore has responded, saying McConnell is the one who should resign.

“The person who should step aside is @SenateMajLdr Mitch McConnell. He has failed conservatives and must be replaced. #DrainTheSwamp,” Moore tweeted, using a phrase popularized President Trump.

Other prominent Republicans who have asked Moore to withdraw from the race include Mitt Romney, Gov. John Kasich (R-OH), and Sens. John McCain (R-AZ) and Pat Toomey (R-PA).