House Republicans absolutely should promise hearings and oversight of President Joe Biden’s disastrous handling of the southern border. But they should also be careful not to overpromise on what they can accomplish as long as Biden is still president. It appears they crossed this line Tuesday.

“Let me be clear: Those responsible for this disaster will be held accountable,” House Republican leader Kevin McCarthy (R-CA) said at a press conference in El Paso on Tuesday. “If Secretary Mayorkas does not resign, House Republicans will investigate every order, every action, and every failure to determine whether we can begin impeachment inquiries.”