Alex Wong/Getty ImagesThe GOP-led House failed in a GOP-led bid to impeach Alejandro Mayorkas on Tuesday evening, a humiliating outcome for the party after months of assurances it would eject the Department of Homeland Security secretary over border security.The motion was rejected in a 214-216 vote, with four Republicans crossing the aisle to join the Democrats in backing Mayorkas. They were identified as Reps. Blake D. Moore (UT), Mike Gallagher (WI), Tom McClintock (CA) and Ken Buck (CO) by T