John McCain actually said...

"I do, however, firmly believe that the advantages of this deal strongly outweigh the disadvantages, and urge Members of Congress to support it."

"The issue before the Congress is not whether the agreement is good or bad, but whether... the United States would be better or worse off with or without it."

"What would be American policy in the case of noncompliance?"

"I also fear a vote of disapproval would weaken the effectiveness and credibility of the United States in the Middle East and around the world."