Senators have delayed the confirmation hearing for Ronny Jackson, President Donald Trump's nominee to lead the Department of Veterans Affairs, the Washington Post reported Monday night. The Post said both Republicans and Democrats on the Senate Veterans Affairs Committee had raised concerns about his qualifications and management of the White House medical staff. Separately, CNN reported members of the committee had been told of allegations of improper conduct in his past. "I can tell you we're vetting out Jackson," Sen. Jon Tester, D-Mont., told the Post. "I can't get into specifics, but we're doing our job to make sure he's fit for the job." Jackson's confirmation hearing had been scheduled for Wednesday. He is a Navy admiral and has been the physician to the president since 2013.