This article is part of The D.C. Brief, TIME’s politics newsletter. Sign up here to get stories like this sent to your inbox. Pete Hegseth’s nomination to lead the Pentagon is, at the moment, the most endangered of President-elect Donald Trump’s Cabinet choices. Hegseth’s hearing with the Senate Armed Services Committee on Tuesday—among the first of the incoming Administration—could offer some clarity on whether the former Fox News host is still on track to lead the nation’s largest employer. [time-brightcove not-tgx=”true”] Central to that debate is likely to be Sen.