August 2, 2003. The U.S. Department of Homeland Security and the U.S. Department of State suspended two programs that have traditionally allowed thousands of international air passengers to travel through the United States for transit purposes without first obtaining a visa. The programs, known as the Transit Without Visa program (TWOV) and the International-to-International transit program (ITI), have both been suspended. The action took effect at 11:00 a.m., Saturday August 2, 2003. The action does not affect U.S. citizens or citizens from visa waiver countries with machine readable passports. All other nationals using the U.S. as a transit point for international travel will now require proper U.S. visas or other U.S. travel documents. The suspension is in effect until further notice. For more detailed information about the suspension, please download the Department of Homeland Security brochure at: http://www.dhs.gov/interweb/assetlibrary/TWOV_ITI_Brochure.PDF.