The repeal still has to survive a vote by the full House, as well as the Senate, before it becomes law - a set of hurdles the measure may not be able to clear. But the inclusion of a proposal by Rep. Barbara Lee, D-Calif., to strike down the 2001 authorization for use of military force (AUMF), which she has offered in years past to no avail, marks a potential turning point for Congress in its ongoing struggle with the White House for a say in how the U.S. military fights extremist groups.