What are the Extent of their Accountability to the US and UK Legislatures?

-Legislative: The President is Dependent on Congress for Passing their legislative Programme. The PM usually has a Majority in the House, and can whip the Vote! -Foreign Policy: The President and the PM can Act on Behalf of the Nation in Foreign Policy. The President will be more Challenged when Congress is Lost to the other Party (i.e. Obama with Iran, Syria and Afghanistan) but the PM can usually get their own way (But Really?) -Second Chambers: The President has the Senate to be concerned about, seeing how the Senate can Block their Appointments to the Supreme Court and the Cabinet. The House of Lords, however, does very Little to the UK PM