This month could mark the first time a chamber of the U.S. Congress has moved to repeal the 2001 AUMF, which has been used by three presidents to keep the U.S. in a state of war for nearly 18 years.

In May, the House Appropriations Committee adopted an amendment to the annual defense spending bill from Representative Barbara Lee that would repeal the 2001 law eight months after enactment. The amendment passed through committee on a party-line vote of 30-22. It could pass, should the Democratic majority remain unified, as early as this week when it comes up for consideration.