The constitution limits the executive branch from the clary war by giving the power to

Congress

The US Constitution allocates different powers to different branches as a way of insuring that no one branch becomes too powerful. Article I, §8, clause 11 gives Congress the sole power to declare war.

This has become controversial as the Executive branch has found ways around this delineation of power.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.