article_snippet: That doesn't sit well with Republicans, many of whom believe the Senate's constitutional role is being bypassed.
article_snippet: But the strength of opposition in Congress makes that route impossible.
article_snippet: According to Republicans such as Cotton, the only deal the Senate would approve is one that completely bans Iranian uranium enrichment.
article_snippet: If Congress doesn't approve the only deal the Senate would approve, Congress won't accept the only deal the Senate would approve, now or in the future," Cotton told CNN.
article_snippet: Lawmakers can refuse to lift sanctions down the road or try to choke off funds for the only deal the Senate would approve's implementation.
article_snippet: It would require a two-thirds vote in the Senate.