The newly sworn-in defense secretary outlined plans on Saturday to advance the president's defense priorities.
President Donald Trump is expected to deliver remarks in Las Vegas as the administration pushes his immigration agenda.
The Republican-led chamber, requiring only a simple majority, voted to clear a procedural step and set the stage for confirmation likely this weekend.
Defense Secretary Pete Hegseth issued a warning to employees of the Department of Defense on Sunday, just days after he was sworn in to his new office.