reckless nuclear program if the president, in fact, takes further action this week to step back from the jcpoa from the iran nuclear agreement negotiated by the previous administration. >> you serve on the foreign relations committee, the chairman is corker, as we know. do you believe senator corker -- do you believe that senator corker has suggested that nearly every one of the senate republican colleagues shares his very deep concerns about president trump? >> well, i respect chairman corker. we've traveled together. we've legislate together. he's a conservative republican but a successful businessman and a clear i'd former mayor of chattanooga. i think he's given voice that are widely shared in his caucus. i don't think it advances our national security interest for this to go on much longer. i do think it's important that the president be mindful of his very narrow margin in the senate, and if he has any hope of making progress on his lejts