Tackling the student loan issue

Most people are in massive student loan debt not only because of the cost of education but also because the interest rates are 7,8,9+ %. The lenders will negotiate a payment plan based on income and typically that amount is less than the monthly interest accrued on the loan. They therefore cant ever payboff the loan and the government keeps talking about paying them off with my tax dollars. What if we just cap the interest rate, regardless of lender at 2 or 3% for education loans. Thats what my rate was in 2001 and it waant hard to pay off.