Never has being wrong felt so good, nor has a mistake been so worth celebrating.

Chuck Schumer surprised me in all the best ways. His opposition to the terrible Iran nuke deal is breathtakingly bold and opens the door to actually defeating it. That would be one of the best things to happen to America, Israel and the civilized world in a very long time.

Absent a miraculous change in Iranian behavior, the senator has made the strongest possible case against the deal, so I don’t think he’ll flip-flop.

Let us count the ways Schumer’s decision matters.

First, because he is the next Senate Democratic leader, I expected him to follow a president from his party and the majority of his caucus. He may pay a price for breaking out of the political box, but he gives cover to other Dems to do the same.

Second, his timing. Schumer ­announced his decision only a day after Obama made an impassioned, partisan appeal. Any momentum Obama had was stopped by Schumer, who effectively rebuked the president’s shameless attempt to link Republicans to Iranian hardliners. That rancid argument is now dead.

To continue reading Michael Goodwin's column in the New York Post, click here.

Michael Goodwin is a Fox News contributor and New York Post columnist.