But the campaign for the nuclear deal has been far more aggressive and focused, those people say.

Clearly, analysts say, the nuclear deal is raising expectations among the group that it can directly affect American politics in a major way.

Negotiations held here last week, between the main architects of the nuclear deal, did not appear to yield anything close to an agreement.

I think this nuclear deal is a good opportunity," he said.

Congress would have to approve this nuclear deal, and it should kill it.

The inefficiency of the plant led to a widespread feeling that the nuclear deal with Westinghouse had been a poor decision.

North Korea, in turn, has said it might repudiate the whole nuclear deal if those oil supplies are interrupted.

That's probably just what the North Korean opponents of the nuclear deal want.

Russia and the United States have been at odds over the nuclear deal for years.

Or it could just as easily collapse under the weight of so many moveable pieces and kill a nuclear deal, too.