Claim: If President Barack Obama strikes a nuclear deal with Iran, "the next president could revoke such an executive agreement with the stroke of a pen and future Congresses could modify the terms of the agreement at any time."
Fact-check: Is the letter to Iran from 47 Republican senators correct about Congress' role in nuclear deal?
Verdict: mostly-true
Organisation: PolitiFact
Author: Louis Jacobson
Date published: 2015-03-11T00:00:00