The asserted that the president could send american troops into action abroad only in the event of a declaration of war or other statutory authorization by congress, or if american troops were attacked or directly endangered.

War Powers resolution of 1973

Explanation:

The War Power Resolution of 1973 or also known as the War Powers Act was the federal law that was an attempt of the congress to limit the power of the President of the United States to initiate military actions outside the nation. Passed over the veto of President Richard Nixon, it limits the time of the military troops to remains abroad without the approval of Congress. It determines the possible cases in which U.S military troops to be sent abroad and the president should notify Congressional session about it in limited time.

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answer; the edward snowden leaks of nsa classified material;