1. Get your passport, credit or debit card ready, and read the help document. 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. Valid Passport – Your passport must be valid throughout your stay. Know what documents a child needs to travel to or from the U.S. All children, including infants, must have their own travel documents. ESTA is an automated system that determines the eligibility of visitors to travel to the United States under the Visa Waiver Program (VWP). In addition to your passport, you may need a travel authorization such as a visa or an Electronic Travel Authorization (eTA) to enter Canada. In addition to your passport, you may need a travel authorization such as a visa or an Electronic Travel Authorization (eTA) to enter Canada. Use our Form Filler to fill out your form and print it. Read the instructions and complete the card before you arrive.