Yes, there are some countries that do and some that don't. Canada is a totally different situation.The Government allows 200-300K of immigrants each year into just Ontario, and they plan on doing this for the next 10 years at least. Do you think this will slow down the housing prices? Its very simple, supply and demand. Secondly, if they wanted to, all they need to do is raise interest rates, right now money is cheap, and there are many, many people that can afford a house at these prices with these interest rates. Have you asked yourself why they don't raise interest rates? I find it absolutely wrong to start taxing people for putting a roof over there families heads. Absolutely wrong. My 2 cents