Kerry is more concerned with the sensibilities of undemocratic Islamic countries than with the legitimate powers of Congress. His mocking, disrespectful remarks about Israel and Congress may be a sign of subconscious insecurity about the shaky deal he has reached with Iran
Through the United Nations Security Council (UNSC) endorsed by unanimity the nuclear arms agreement of July 14, 2015 between Iran and the P5+1 powers, the United States Congress is expected to vote on it by September 17.
The UNSC agreed to lift the economic sanctions on Iran it imposed by Resolution 1696 on July 31, 2006, after Iran refused to suspend its uranium enrichment program, if it believes that Iran has curbed its nuclear activities. The U.S. Congress has 60 days to decide whether to lift the separate U.S. sanctions.