Ferdinand Marcos,
Letter of Instruction No. 26
(1972)
“ Bona fide officers and crew members of international air carrier or inter-ocean going vessels or of any Philippine commercial watercraft or aircraft duly authorized to undertake foreign travels at this time or may hereafter be authorized by the Philippine Government, Filipino citizens in active military service with the United States Armed Forces and their direct dependents; and Foreigners who are treaty traders recognized by international conventions/practices. ”
