Executive power and the role of Congress in the Paris climate and Iran nuclear agreements

  In recent months, multilateral efforts have produced two historic agreements aimed at improving global security: the Iran nuclear agreement and the Paris climate agreement.

  The Iran nuclear agreement, which blocks Iran’s nuclear capacity in exchange for a gradual lifting of economic sanctions, was finalized in July and is expected to be implemented imminently. Before negotiations concluded, Congress passed the Iran Nuclear Agreement Review Act of 2015, which gave Congress a 60-day period in which it could seek to pass a joint resolution of disapproval. On September 10, all but four Democrats in the U.S. Senate voted to filibuster such a resolution. The agreement, which is nonbinding under international law, therefore proceeded without the need for a presidential veto.