Ronny Lynn Jackson (born May 4, 1967) is an American physician, politician, and retired United States Navy rear admiral who is the U.S. representative for Texas's 13th congressional district. Jackson joined the White House Medical Unit in the mid-2000s under George W. Bush, and served as Physician to the President from 2013 to 2018 under Barack Obama and Donald Trump. On March 28, 2018, Trump nominated Jackson to be United States secretary of veterans affairs to succeed David Shulkin. On April 23, 2018, allegations of misconduct and mismanagement during his service in the White House were reported. The administration disputed the allegations. Concern was also expressed about Jackson's lack of management experience. On April 26, 2018, Jackson withdrew his nomination as Secretary of Veterans Affairs. On February 2, 2019, Trump appointed Jackson Assistant to the President and Chief Medical Advisor, a new position in the Executive Office. Jackson retired from the Navy on December 1, 2019, and on December 9, he filed to run for Congress in Texas's 13th congressional district. Placing second in the Republican primary, he won a runoff for the nomination and the November 3, 2020, general election.