A good first step would be to reduce the supply of loan dollars, which would lower the number of students who can pay for college (however, no politician would sign up for that) and theoretically lower prices.
There's also a stigma in the US about "blue collar" jobs, which is absolutely pathetic. Plenty of people in America support their families (quite well) working in blue collar industries.
As an example, plumbers in my area (New England) can essentially demand their own rate and take on work as they desire. Don't want to pay their quote hourly rate? Well then, you can fuck right off and good luck finding another plumber in the next 2 weeks.
We need to do away with the mentality that you HAVE to go to college, because you don't and the majority of those who do are attending are doing so because they are naive and don't know any better.