I have a character that I want to be returning to the United States from Mexico and get held by Customs due to a case of mistaken identity. From Google I've learned that you do need a passport but when I search for Customs, I just get what you can bring back into the country and not so much what I need, which is to know...how stringent are they when it comes to passports? Is it likely my character would be run through a computer and trigger an alert? Is it more likely his passport would get checked if he came back by air, rather than car?
Haven't traveled internationally myself so please forgive my ignorance on the subject...
Searches done: passport for Mexico, Mexico customs, Customs checks
EDIT: More details. Character B is wanted by the FBI and is fond of using the names of musicians and such for his aliases. Character A's name happens to be one of the used aliases, plus be pretty much identical to him, though not related. I'm wanting Character A to be detained because his name is red flagged and established as a known alias for Character B. With the increased security in the States seemed like the easiest way was to have him get caught using his passport to get back into the country.