President Trump fired Gen. CQ Brown as part of his administration's efforts to rid the military of leaders who support diversity and equity initiatives. Brown had come under fire from conservatives for speaking positively about diversity.

Caine is a decorated F-16 combat pilot with experience in special operations and classified Pentagon programs. He previously served as associate director for military affairs at the CIA. However, he lacked traditional qualifications and required a presidential waiver to be appointed.

Caine pledged to remain apolitical and provide candid advice to the president. He disputed stories suggesting he once wore a 'Make America Great Again' hat, stating he has never worn political merchandise.

Democrats expressed skepticism and concern over the politicization of the military following Gen. Brown's firing and Caine's nomination. They initially delayed the confirmation vote, but the Senate eventually voted 60-25 in favor of Caine.