Just a comment on the last few posts I've read--it's about free PUBLIC college, not free private college.
That distinction is often not made, especially by the detractors on cable TV. What's a detractor? Anybody making profits on college loans.
I read a story in the Sunday NY Times on this, and as I recall, the tuition for public colleges averages about $10K per year. The total federal education budget is close to $90 billion? I don't know if I remember that right, but the point was public college tuition could be covered by shifting some of the budget towards that cost.
So it would appear that free tuition for public colleges is within reach. This would not cover room and board and living expenses, but still affordable for a lot more families.
As for private colleges, it might take some of the loan burden off them, since more needy students would be going to the public colleges.
Of course, college loans is a big business nowadays, and where there's money to be made, there are lobbyists putting out money to the politicians. And why do the politicians need the money? To pay the media for all that TV political advertising--which should be free.
It's a profit-based system.