the senate is set to destroy Obama's iran policy

why else did they want to weigh in on it?

corker today said as much....

Bob Corker: Nuke deal gives Iran too much

Washington (CNN)The architect of a measure that would give Congress more oversight over President Barack Obama's nuclear deal with Iran says he's skeptical the Middle Eastern country would live up to its agreements.

Senate Foreign Relations Committee Chairman Bob Corker, R-Tennessee, on Sunday told CNN's Jim Sciutto on "State of the Union" that he's afraid the United States and five other world powers involved in the negotiations have given away too much to Iran in their effort to strike a deal.

And, he said, he's afraid Iran's negotiators have been kept in the dark about the country's ambitions to build a nuclear weapon — given so little information that they "could pass a lie detector test."

"We're concerned that if the negotiators don't even know on behalf of Iran all the things Iran has been doing, how are we going to know?" Corker said.

http://www.cnn.com/2015/04/19/politics/bob-corker-ben-cardin-iran-nuclear-negotiations/