In 2003, the Task Force on Community Preventive Services, an independent, non-federal task force, examined an assortment of firearms laws, including the AWB, and found "insufficient evidence to determine the effectiveness of any of the firearms laws reviewed for preventing violence".[30] A 2004 critical review of firearms research by a National Research Council committee said that an academic study of the assault weapon ban "did not reveal any clear impacts on gun violence outcomes". The committee noted that the study's authors said the guns were used criminally with relative rarity before the ban and that its maximum potential effect on gun violence outcomes would be very small.[1]