Prior to this win, Branch made history when she was the first African American to be named Miss Mississippi USA in 2018.
Both Fox and Telemundo will air the competition live.
The 23-year-old graduate from Texas Christian University holds two Bachelor of Science degrees.
"I would love to see more women who look like me in Sports Illustrated, a woman of color with these big hips and this not-so-flat stomach."
Trump told Howard Stern he was going to make the Miss USA pageant gradually more scantily clad.
It's the second year in a row that the nation's capital won the crown.
The network, which screens the pageants of the Miss Universe Organization that Trump partly owns, will no longer work with him.