Passing Through the US Between Canada and a Third Country
The United States has suspended its policy of allowing travelers to pass through U.S. airports in transit to foreign destinations without a visa if they would otherwise require a visa to enter the U.S. This change has no effect upon Canadian citizens, nor upon those who qualify to enter the U.S. under the Visa Waiver Program.
Transit visa applicants must establish to the satisfaction of the Consular Officer that they intend to pass in continuous transit through the United States and that they have a residence abroad that they do not intend to abandon. Transit aliens must have onward transportation arrangements to their final destination and permission to enter some country other than the United States following the transit through the United States, unless the alien submits satisfactory evidence that such advance permission is not required.