Lee gained national attention in 2001 as the only member of congress to vote "No" on the Authorization for Use of Military Force Against Terrorists (AUMF), stating that she voted no not because she opposed military action but because she believed the AUMF, as written, granted overly-broad powers to wage war to the president at a time when the facts regarding the situation were not yet clear. She "warned her colleagues to be 'careful not to embark on an open-ended war with neither an exit strategy nor a focused target.