Senate Majority Leader Mitch McConnell (R-Ky.) said this morning that President Obama will win the "short-term battle" because Congress will not be able to block the Iran nuclear deal. 

But he said Republicans, and the Democrats who oppose the president, have "won the argument with the American people."

"There is overwhelming opposition to the deal. The Israelis oppose the deal. Our Sunni Arab allies are nervous and apprehensive now, feeling they can't trust us anymore," he told Bill Hemmer.

McConnell said he believes the issue has a "long shelf life" and that the debate will continue until Americans "render judgment" on Election Day 2016.

McConnell said Senate Democrats have used a "procedural device" to prevent a motion of disapproval, which would then be vetoed by Obama. 

House Speaker John Boehner is considering a lawsuit to stop the deal, while Sen. Ted Cruz has proposed going after U.S. banks that release money to the Iranians. 

McConnell said he will explore any proposal by his fellow Republicans.