This would save young Americans from going into crippling debt, but it would also make a university degree completely unaffordable for most. However, in the age of the Internet, that doesn’t mean they couldn’t get an education.
Consider the long term impact of this. There are a lot of different ways such a situation could go, for better and for worse.
Canada recently stopped charging interest on their student loans, that goes a long way to affordability. The other thing though is just plain cost of education. It can be cheaper to get a 4-year degree from a Canadian University than take one year of a comparable program in the US.