"Just sell the damn team and shut up!"
That's U.S. Congressman Max Rose clapping back at NY Knicks owner James Dolan after the billionaire donated money to his political opponent ... after Rose called for Dolan to sell the team!!
It's a feud that escalated quickly right here on TMZ Sports -- and it's only getting nastier.
Rose -- a decorated war veteran and lifelong Knicks fan -- told us he's sick and tired of watching the Knicks suck ... and publicly called for Dolan to sell the damn team already!