Moments before the committee was set to vote on the nomination, Senate Commerce Chair Maria Cantwell (D-Wash.) said from the dais that his nomination will be considered “at a later date.” She gave no further explanation.

Sen. Tammy Duckworth (D-Ill.) said the vote was postponed due to “one person,” but would not say who.

Democrats hold a one-seat majority on the committee. Three senators who caucus with Democrats — Jon Tester (D-Mont.), Jacky Rosen (D-Nev.) and Kyrsten Sinema (I-Ariz.) — had not taken a public position on Washington’s nomination ahead of the vote.

Recently, Sen. Ted Cruz of Texas, the top Republican on the committee, has pummeled Washington repeatedly, not only for his past and his level of experience, but also because the law requires that the head of the FAA be a civilian. Washington is an Army veteran. In the past, veterans have received waivers from Congress to serve, though the last one was issued under the Bill Clinton administration.

In response to Cruz, the FAA’s general counsel issued a letter earlier this month saying that Washington, who is retired, is clearly now a civilian and asserted that past administrators who received a waiver for military service didn’t really need one.

“I’m glad to hear the committee is delaying consideration of the nomination of Phil Washington,” Cruz said Wednesday. “I think every member of this committee knows that Mr. Washington is not qualified for the position to which he was nominated.”

Cruz pushed the committee to elevate acting FAA Administrator Billy Nolen for the top job instead. In response, Cantwell said she will continue to push for Washington’s nomination.

“We will have this debate in the future. Mr. Washington is qualified,” Cantwell said Wednesday.