Last week, Canadian government plans for keeping better track of people coming and going from the U.S. were revealed. The driving purpose for the increased scrutiny will save the government millions of dollars in social benefits on those who shouldn't receive them because they are out of the country.
As a Canadian living in the United States (legally -- I'm a permanent resident), Americans routinely ask me when I'm going to become a U.S. citizen. It's always interesting to watch their reactions when I tell them "no thank you." The simple answer is that don't want to run afoul of that greedy monster, the IRS.