This vote highlights the tension between the President and the Senate in the foreign policy arena. Despite its diminished power in foreign affairs vis-à-vis the President, the Senate remains the sole constitutional entity responsible for the establishment of treaties with foreign nations. During Senate consideration of the Moscow Treaty an arms-control treaty also known as the Treaty on Strategic Offensive Reductions Senator Carl Levin (D-MI) proposed an amendment to insure that proper consultation occur between the President and the Senate before any changes in the Treaty were made by the President. Wary of presidential tendencies to concentrate power in the executive branch, progressives supported Levin's amendment as a way to maintain the Senate's influence in foreign policy matters. Levin's amendment failed by a 44-50 margin.