1. Get your passport, credit or debit card ready, and read the help document. Apply online for an eTA.When using U.S. preclearance facilities at a Canadian airport, you must meet U.S. entry requirements. We provide services to Canadians visiting and living in the United States. We also provide services to Canadians in: Arizona, Nevada, Southern California. Submit your customs and immigration declaration online using Advance Declaration up to 72 hours before you arrive in Canada. Travelers must have a valid Electronic System for Travel Authorization (ESTA) approval prior to travel and meet all requirements explained below. 999 North Capitol St. NE Mail Stop 2295. Washington, DC 20529-2295. How do I find out my application date called a Priority Date?