CCC's hosting 2 Nordic World Cups in Dec 2012. Quebec City and Canmore.
http://www.cccski.com/main.asp?cmd=doc&ID=8281&lan...
Sounds like the Quebec City will be sprints, probably on the Plains of Abraham course. Very cool. Dec is a cold month though, expect at least one race to be cancelled and lots of Euro complaining about it being below -10. Early season waxing in eastern Canada is also really tricky.
Paging the US Ski Federation. Anytime you'd like to step up to the plate and host some WC's would be a nice start.