House lawmakers on Wednesday introduced bipartisan legislation to nullify President Trump’s executive order stripping two-thirds of the federal workforce of their collective bargaining rights.

The National Treasury Employees Union, a federal labor union representing 150,000 workers across about three dozen U.S. agencies, is suing to block the Trump administration from trying to end collective bargaining with government employees.

The move added to the list of actions by President Trump that use the powers of his office to weaken perceived enemies.