In the simplest case: Congress declares war, and does not intrude on the President\u27s solo decision about when the troops come home. However, in our time, long wars, such as in Afghanistan and Iraq, occur with great tension between the two elected branches of government over the pace of a drawdown. Sometimes it may be a hawkish Congress that disagrees with a President reluctant to continue the war at full troop levels. To find a joint way to draw down the American troops in the war zone, they may seek congressional mechanisms to resolve their differences with interactive processes. Then, constitutional issues arise as to whether a congressional mechanism may use a legislative veto - authorization for a drawdown with a reservation of power...