Tribal law enforcement agencies act as first responders to both felony and misdemeanor crimes. For most of Indian country, the federal government provides felony law enforcement concerning crimes by or against Indians. Certain areas of Indian country are under Public Law 83-280, as amended. P.L. 280 conferred jurisdiction on certain states over Indian country and suspended enforcement of the Major Crimes Act (18 U.S.C. § 1153) and the General Crimes Act (18 U.S.C. § 1152) in those areas. Indian tribes retain concurrent jurisdiction to enforce laws in Indian country where P.L. 280 applies.