certify that iran is transparently verifiably and fully implementing the agreement. and that continuing the jcpoa is vital to national 30. a high bar, says u.n. investor nikki haley. >> if he thinks the deal is, the situation is not in the best interest of the american public, then he doesn't certify it. >> >> is public: possible nikki haley tipped the administration's hand yesterday, praising tom cotton's understanding of the iranian regime. cotton met with the president today and has repeatedly called for the administration to abandon the deal. >> frankly that deal is an endorsement to the united state united states, and i don't think you've heard the last of it. believe me. >> two weeks ago, the president called the iran deal in embarrassment but experts warn that doesn't mean he's any more likely to abandon the accord or have the final say on it. stick out the final decision will go back to the congress under the terms of the corker