If one has easily proved closer ties to Canada there is no problem. Example: you pay income tax in Canada, have investment and bank account in Canada, own a home in Canada, have Canadian credit cards, family in Canada, vehicles registered in Canada, Canadian DL, etc. But there are those who do overstay in the USA and have some of the above in the USA. They have lots to worry about. US income tax laws are much different than Revenue Canada's . For instance upon death much of your estate will be taxed. The original article that was in some BC RV rag is a bunch of bad journalism with quotes from those who know nothing. No interview with either American or Canadian customs and immigration people. Others are quoting that article without fact checking. I think we will see further news from a real source on this subject in the near future. As is stated: Those who are legal and follow the rules have nothing to fear. I have only heard of a few RV'rs in the last 10 years that have had problems. Most were full timers with no real Canadian permanent address. Casual RV'rs are not normally hassled. Strange that the IRS and US border agents are worried about Canadians instead of the 10 million plus Hispanic Illegals. Adding in the Oriental, Slavic, African and Muslim illegals gives a population larger than many countries. As for losing your Canadian health care: Have you known any snowbirds that were denied coverage in Canada? Most provinces do not add up your total days outside of Canada. They allow the clock to restart when you return. That may not be the actual rule but I think they turn a blind eye. The Canadian Snowbird Assoc. has much information on this subject.
Moisheh