Answer: The answer is:
a. because President Johnson misled Americans about the progress of the Vietnam War.
Step-by-step explanation:
President Harry S. Truman had committed U.S. troops to the Korean War as part of a United Nations “police action,” and Presidents Kennedy, Johnson and Nixon had overseen the long and controversial undeclared conflict during the Vietnam War.
The House and Senate crafted the War Powers Act as a means of reasserting Congressional authority over foreign wars.