With Alex Rodriguez just 2 home run from tying Willie Mays as #4 on the all-time MLB home run list ... NY Congressman Peter King says NO ONE should celebrate ... 'cause A-Rod's a dirty cheater.
In fact, the Yankees are practically ignoring A-Rod's impending accomplishment (odd since the Yanks usually celebrate EVERYTHING) ... but King says it's definitely the right move.
"I think they're right because it's obvious that so many of [A-Rod's] home runs were tainted," King told TMZ Sports.
"I think it would be wrong to be celebrating ... since for all we know, hundreds of those home runs probably occurred when he was taking steroids."
Of course, Rodriguez has admitted to using illegal performance enhancing substances -- and was suspended for the entire 2014 season.
But even if the Yanks do acknowledge the milestone, Alex still has a huge incentive -- the guy will get a $6 MILLION bonus if he ties or breaks the record.