This is a political straw-man attempt to gain points in a run up to election. Congress already has this power and is using this as a tactic to stir the ire of the general public. Not only has POTUS stated, quite frequently, that they should have a say, he has also pointed out that they have the ability to override it AND that it is still a VERY preliminary "deal". Under the misguided "leadership" of Tom Cotton (as a veteran myself, I am GREATLY disappointed in his violation of the Logan Act and his justification being that of a vet martyr) even pointed this all out to the Iranians in the letter he penned. This is a Congress taking advantage of Social Media fervor to pass legislation that they know will 1. stall in the Senate and 2. be vetoed so that they can make it appear that they are being undermined by the President.