Section 1
SECTION 1. All grants, deeds, patents, leases, or other instruments of conveyance purporting to convey from Moro sultans or dattos, or from chiefs of non-Christian tribes, lands situate in the Philippine Archipelago or rights of property, privileges, or easements appertaining to or growing out of land therein, made without the authority of the Spanish Government while the Philippine Archipelago was under the sovereignty of Spain, or without the consent of the United States Government or of the Insular Government since the sovereignty of the Archipelago of the Philippines was transferred by the Treaty of Paris from Spain to the United States, and not based on any lawful patent or grant of the Government of Spain to the United States or of the Insular Government, whether such grants, deeds, patents, leases, or other instruments of conveyance were made before the passage of this Act or shall be made after its passage, being made without any lawful authority or ownership, are hereby declared to be illegal, void, and of no effect.