Vanilla Ice is defending his participation in the “Great American State Fair,” insisting he’d perform for anyone — from President Donald Trump to former President Joe Biden to Russian President Vladimir Putin — if it meant showing his fans a good time. As of Saturday, Ice is one of the few acts remaining on the roster for the event, a 16-day celebration in Washington, D.C., that marks the nation’s 250th anniversary. It’s being organized by Freedom 250, described on its website as a “national, non-partisan organization” established by Trump. Participants balked at the celebration’s affiliation with Trump, with many condemning the event on social media — but the “Ice Ice Baby” rapper thinks critics need to lighten up. “I’m here to party with America, man,” he told TMZ on Friday. “Music is made to bring people together, and that’s what we are here to do.…