To amend chapter 40 of title 18, United States Code, to exempt the transportation, shipment, receipt, or importation of explosive materials for delivery to a federally recognized Indian tribe or an agency of such a tribe from various Federal criminal prohibitions relating to explosives.

Amends the federal criminal code to extend the exemption from prohibitions on the transportation, shipment, receipt, or importation of explosive materials to federally-recognized Indian tribes or agencies of such tribes. Defines "Indian tribe" as any Indian or Alaska Native tribe, band, nation, pueblo, village or community that the Secretary of the Interior acknowledges to exist as an Indian tribe.