The Iran Nuclear Agreement Review Act of 2015 (H
The bill passed in the Senate by 98 to 1 (only Tom Cotton voted against), and then passed in the House by a vote of 400 to 25 on May 14. President Barack Obama had threatened to veto the bill, but eventually a version was arrived at that had enough support to override any veto and Obama did not try to veto it.
Larry Klayman unsuccessfully attempted to challenge the law as an unconstitutional abrogation of the Senate's Treaty Power.
References
Iran Nuclear Agreement Review Act of 2015 Wikipedia(Text) CC BY-SA