Currently, Canadians and Americans are able to enter the United States with little more identification than a driver's licence or a birth certificate, though a passport has sometimes made it simpler to satisfy immigration officers at the border.

I just find it hard to get worked up about what is normal for every other border in the world. The only small argument against requiring a passport at border posts is that it is so easy to just walk around them. Fair as far as it goes but you can't drive a truck through the woods.

Fixed: [thanks to an emailer] "Yes" in spanish is "Si" and not "Ci." Sadly, fifteen years of not writing a language is enough to demolish two years of learning it (but my french and latin are ... also degraded shite).