alt Hacker NewsIt isn't solely the government's fault. Most American universities are corporatized and exist primarily as money printers for the admin staff. The purpose of an adjunct professor is to cost the institution as little as possible while passing as many marginal students as possible so they can maximize profits with sheep that keep coming back to the trough.
This only works if students have the money though - which the government helpfully provides. The Universities are just milking the system - which isn't their fault - it's ours as the voters.