The chairman of the National Republican Congressional Committee on Tuesday warned that backing the impeachment of President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE will cost Democrats their House majority in the 2020 election.

"For the past three years, the socialist Democrats have been obsessed with impeaching the president and backfilling in the reason after the fact," Rep. Tom Emmer Thomas (Tom) Earl EmmerHouse Democrats' campaign arm reserves .6M in ads in competitive districts The Hill's Convention Report: Trump to attack Biden at final night of convention | Speech comes amid hurricane, racial justice protests | Biden accuses Trump of 'rooting' for violence Republicans cast Trump as best choice for women MORE (R-Minn.) said in a statement.

"They have become so radicalized by their hatred of President Trump that they are willing to plunge the nation into a constitutional crisis based on secondhand gossip," he continued.