President Obama has stated that he wants “to begin engaging Congress” over a new Authorization for Use of Military Force (AUMF) against the Islamic State and also that he wants to “right-size and update” the 2001 AUMF “to suit the current fight, rather than previous fights.” It appears that Congress, too, is finally getting serious about putting U.S. counterterrorism operations on a contemporary and more rigorous statutory footing.

There are many politically contested questions about how the government should accomplish these goals — about, for example, whether U.S. ground troops should be banned from Syria and Iraq, how the fight against the Islamic State should be conducted consistent with U.S. policy against Syrian dictator Bashar al-Assad and what rules should govern the targeted killing of U.S. citizens abroad.

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