In the film Daniel Radcliffe (the real Radcliffe is not in the movie, this is a lookalike playing Dan) contracts AIDs after an infected child's blood enters open wounds in his mouth. Later in the movie, Radcliffe ends up infecting Trump and they play mock news reports about how Donald Trump has AIDS.
Sony, who greenlit this script for some reason, became incredibly nervous believing that Trump would sue them over the film and they tried to get Sacha Baron Cohen to remove it. The execs were unsuccessful as Sacha Baron Cohen apparently has final cut of the film which hey good move there too Sony.
They ended up reaching a compromise where the film now has a disclaimer in the credits stating that Trump does not have AIDS.
Source 1, 2 and 3
That AIDS joke... that photoshop job...