Mike Tyson: DEFENDS TRUMP ... Every President Offends Somebody

Mike Tyson isn't abandoning Donald Trump over his proposed Muslim ban -- even though he's Muslim -- telling TMZ Sports saying offensive stuff is par for the course with U.S. presidents.

Tyson first endorsed Trump back in October -- saying Obama's plans aren't working and he believes it's time to "try something new."

But after Trump suggested a new plan to ban Muslims from entering the U.S. -- and faced a HUGE backlash from Muslims and non-Muslims -- we asked Tyson if this was the final straw.

"Hey listen, anybody that was ever President of the United States offended some group of people," Tyson said at the airport in D.C.