The Denver Post ripped Sen. Cory Gardner’s Thursday decision to side with President Donald Trump on his national emergency declaration, calling the lawmaker “a political time-server interested only in professional security.”

“Our endorsement of Cory Gardner was a mistake,” reads the headline of the Denver Post’s biting editorial published Thursday night. “Thursday’s vote was the last straw.”

The piece characterized the Colorado Republican’s vote as an abdication of his responsibility to prevent the circumvention of congressional spending authority and end a constitutional crisis. Gardner stressed that the vote addressed an urgent need for a wall to curb the “crisis” of immigration at the border.

Gardner’s vote contradicts skepticism he has expressed in the past about the utility of a southern border wall.

In its 2014 endorsement, The Denver Post lauded Gardner as an energetic moderate, citing what the paper described as his “restraint” toward military spending. The editorial board cheered the Yuma Republican, saying the Senate “needs fresh leadership, energy and ideas, and Cory Gardner can help provide them in the U.S. Senate.”