Congressional critics warn a defiant defense secretary could imperil military funding WASHINGTON—With a vote on his impeachment looming next week, Defense Secretary Pete Hegseth is digging in his heels and vowing to stay at his Pentagon post for the rest of the Trump administration. Hegseth has reassured his allies that he is not angling for Marsha Blackburn’s Tennessee seat in a Senate that will now be controlled by Democrats, Pentagon officials said. If his congressional opponents vote to impeach him, Hegseth will seek to use the confrontation as a platform to aggressively defend his agenda, which includes the war with...