Sens. Mike Lee and Jerry Moran chose President Donald Trump’s favorite medium when they were ready to disrupt the GOP rewrite of the health care law.

The somewhat unlikely pair of conservatives tweeted at 8:30 p.m. Monday night that they could not support the Senate health plan, giving no heads up to the White House or Senate leaders before pressing send.

The announcement, coming after some 10 days of conversations between the men, stunned official Washington and left Majority Leader Mitch McConnell at least two votes short in the closely divided Senate from being able to move forward, effectively sinking the measure. It landed shortly after Trump dined with a group of senators to discuss strategy – unwittingly plotting a plan that would immediately become outdated.