9/11 families promise - Taliban captures capital - Taiwan arms sale

Those laws, the 1991 Authorization for the Use of Military Force (AUMF) and the 2002 AUMF, were passed to give the president broad discretion in his military campaigns against Iraq. Congress in recent decades has enacted AUMFs and other legislation that has slowly diminished its ability to oversee the U.S. military's involvement in conflicts.
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The administration has expressed its openness to replacing the 2001 and 2002 AUMFs with a "narrow and specific framework" governing military force, but given President Joe Biden's recent questionably legal airstrikes, it's unlikely he would cede a lot of power. Biden hasn't invoked an AUMF to justify any of his attacks so far, instead relying on Article 51 of the United Nations Charter and Article II of the Constitution.
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Even without the broad discretionary powers granted by an AUMF, the president has ways to wage war. Military engagement is unlikely to stop altogether under those constraints, but we could get more deliberation and discussion before a president unleashes it.