In the South Carolina rally, Trump mocked Kovaleski for what he saw as the reporter stepping away from an article he wrote on the 9/11 attacks in The Washington Post.
'Now the poor guy, you ought to see this guy,' Trump said, drawing his wrists up close to his chest and flailing around. '"Ah, I don't know what I said! I don't remember!"'
Kovaleski has arthrogryposis, a congenital condition that has locked his right arm up against his chest in a similar position to the one Trump held.