As reported by The New York Times, the incident took place last summer at the White House while walking through the Diplomatic Reception Room with four Democratic lawmakers. Speculating on who would run against him in 2020, Trump stated that Senator Bernie Sanders would run, "even if he's in a wheelchair." Then, according to someone in attendance, the President proceeded to hunch over and mimic being an elderly person in a wheelchair.
Because he’s smarter than you. Even if he were 105!— Embarassed American~ (@dmduffy6666) December 10, 2017
And if the election were held today, the wheelchair all on its own would beat him.— The Great Gus B (@g_bridi) December 10, 2017
Oh how cute. Little Donny thinks he is gonna make it to the end of his term and run again.— N. Baki (@TalkingTiger44) December 10, 2017