After your child accepts the appointment and before he/she reports there will be security clearances and, although I can not remember the name as I am typing this, a form will be electronically submitted by your Cadet and among the questions will be any and all trips outside the US, and follow up questions from there. My son listed a few in Canada, which ironically occurred when we drove through Canada from Michigan to West Point, and then back. Based on the answers on the security application, my son was tagged for an interview, and an investigator literally came to my sons school and met with him for a bit less than an hour if my memory serves correctly. My son asked why he was tagged, and the guy said most likely the trips to Canada. We were a bit worked up about it, but wasn't a huge deal. He got his clearance, and is a plebe at West Point.