> I recall no real good reasoning for it other than the DOH wanted to close the loop hole, without any real evidence it was a cause of issues After 9/11 there

> I recall no real good reasoning for it other than the DOH wanted to close the loop hole, without any real evidence it was a cause of issues After 9/11 there were (false) rumours (spread by US Congressmen IIRC) that some terrorists entered the US via Canada. Even though that was shown to be false the stigma remained and I think it was a big part of the reason for the changes. There were a lot of people in border towns affected. Before 9/11 some people crossed daily for work and knew all the border agents. They would just drive through with a wave but that all changed.