Visitor Visa Border Interview Questions. Being asked to wait in a small room while you wait for questioning by an immigration officer can be a nerve wracking experience for the unprepared. Knowing what to expect and preparing yourself for the experience can mean the difference between refusal and approval. Canada Border Services Agency (CBSA) The Border Information Service (BIS) is the call center for the CBSA. At this number you can ask any type of question related to crossing into Canada. Unlike the U.S. Border Services, Canada doesn’t publish the phone numbers for it’s ports. Oct 28, 2017 · Driving across the border is the simplest way to enter Canada. Most visitors need to show only documents proving their identity and citizenship and answer truthfully any questions asked. Filling ... Reporting: Questions asked by US Customs when crossing border. This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community. Questions and feedback. Travel.gc.ca integrates the web content and services of 12 federal government departments and agencies into a single Government of Canada website designed to provide a one-stop-shop source of information for Canadians travelling and living abroad.