How did the war powers act of 1973 affect the power of the president ?

The war power act of 1973 affected the presidents ability to a great extent, the act put a restraints over the presidents ability to send U.S armed forces to other foreign countries and in hostile environments before consulting or reporting the congress.

Explanation:

The war power act of 1973 explicitly claimed that the presidents right to send U.S armed forces to foreign missions and places without consulting and reporting to congress had been diminished.

Since this act, the presidents have tried to take actions and sending the military forces to foreign land with their consult.  

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c. the passage of the fifteenth amendment