00542nam 2200169z- 450 9910693762303321(CKB)4970000000037445(EXLCZ)99497000000003744520240129c2002uuuu -u- -engInternal Revenue Service : efforts to identify and combat abusive tax schemes have increased, but challenges remainWashington, D.CInternal Revenue ServiceDOCUMENT9910693762303321Internal Revenue Service3137435UNINA