Brad Sherman actually said...

This deal is not a treaty. It has no standing under U.S. law except as a handshake from the President.

You can be sure that Iran will violate this agreement or not, based on whether it's in their interest.

Now, under U.S.--now as the law--under U.S. law the only thing that's binding on the U.S. is a tree that's designed as a treaty.

He wants to sanction Iran in order to desecrate a document signed by his predecessor.