Howie Mandel to Nick Cannon Please Come Back!!!

2/27/2017 8:23 AM PST

Howie Mandel Begs Nick Cannon to Return to 'AGT'

Howie Mandel did everything but drop to his knees ... begging Nick Cannon to return as host of "America's Got Talent."

Howie -- 1 of 4 judges on the talent show -- made a passionate plea Sunday at LAX. Howie's pretty damn adamant -- Nick's the heart and soul of the show.

TMZ broke the story ... Nick quit 'AGT' after learning NBC was on the verge of firing him for a harmless joke he made on Showtime.