GM named the recalled vehicles as the 2013-2014 Buick Encore, Buick Verano, Chevy Cruze and the 2012-2014 Chevy Sonic. The affected vehicles are equipped with Calix oil pan/block heaters. The insulation on the engine block heater cord can become damaged in cold temperatures and cause the wires to be exposed.
Treaty power is a co-ordinated effort between the Executive branch and the Senate. The President may form and negotiate, but the treaty must be advised and consented to by a two-thirds vote in the Senate. Only after the Senate approves the treaty can the President ratify it. Once it is ratified, it becomes binding on all the states under the Supremacy Clause. While the House of Representatives does not vote on it at all, the requirement for the Senate's advice and consent to ratification makes it considerably more difficult to rally enough political support for international treaties.
And finally, congressional-executive agreements require majority approval by both the House and the Senate, either before or after the treaty is signed by the President. Currently, international agreements are executed by executive agreement rather than treaties at a rate of 10:1.