To amend the Internal Revenue Code of 1986 to deny the benefits of the Puerto Rico and possession tax credit in the case of runaway plants.

Amends the Internal Revenue Code to deny the Puerto Rico and possession tax credit to runaway plants (new or newly expanded operations at Puerto Rican or other possession facilities) unless the Secretary of the Treasury determines that such plants will not have a substantial adverse effect on employment at U.S. facilities. Provides a period for public comment prior to the Secretary's determination.