Be advised that the Canadian customs folks are on strike. 2 of the 5
unions have settled, but there are still massive delays at the border
if you're driving. Check
http://www.cbsa-asfc.gc.ca/general/times/menu-e.html for more
information. The strikers are picketing in front of the commercial
traffic, not passenger traffic, but when the backups back up highways
(as in Michigan), everyone stops.
