Except as otherwise authorized by law, the National Guard: is designated as a law enforcement agency for the sole purpose of receiving property and revenues; and may receive property and revenues under 18 U.S.C. § 981(e)(2), 19 U.S.C. § 1616a(c)(1)(B)(ii), and 21 U.S.C. §§ 881(e)(1)(A) and (e)(3) from those federal units that are supported by National Guard members in the Counter Drug Program. Any property or revenues received by the National Guard under this section shall be used to supplement the resources allocated to the Counter Drug Program. The use of the property and revenues shall conform to the guidelines of the United States Department of Justice, the United States Department of Defense, and the United States Department of the Treasury.