The GOP candidates are pledging to undo the Iran nuclear deal. Don't buy it.

Republicans can talk the talk, but history shows they're unlikely to walk the walk

Just talk?
(Image credit: Chip Somodevilla/Getty Images)

Republicans have spent much of the last six years shaking their fists in impotent protest against the things that Barack Obama has done. That's the way it is when you're out of power: There are only so many tools at your disposal to undo what the president does, even if you control Congress. This dynamic also explains some of the restiveness in the Republican electorate, since their leaders have been telling them of all the ways they'll fight Obama (like repealing the Affordable Care Act), only to be stifled at every turn.

And now it looks like they're going to fail to stop the deal the United States and five other world powers negotiated with Iran to restrain its nuclear program. Since the agreement isn't a treaty, it doesn't require ratification; instead, Congress can try to pass a resolution to stop it, which President Obama would veto. A veto override would require two-thirds of the members of both chambers of Congress, and the deal's opponents aren't going to get that.

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Paul Waldman

Paul Waldman is a senior writer with The American Prospect magazine and a blogger for The Washington Post. His writing has appeared in dozens of newspapers, magazines, and web sites, and he is the author or co-author of four books on media and politics.