Somewhat counterintuitively, the more expensive and prestigious the college the cheaper it is to attend if you can't afford it. For example Stanford is tuition free for all students whose parents make less than $125,000 and also adds free room and board if your parents make less than $65,000/year.A couple of things to consider.
Needs-based - most public colleges have scholarship programs making them free or cheap and even Harvard has a needs-based subsidy.
You borrowed from a government agency and they most certainly can cancel your contract.
You borrowed from a private entity - even with a government guarantee, it's still unclear how the conversation would impact this.
Here in Illinois - which is a notoriously screwed up state fiscally - the public colleges and their scholarships make it fairly easy for the needs-based student to attend. Certain specialties like nursing and teaching also have numerous subsidy programs and many are not even needs-based.
The government loans are currently in a payment hiatus through September so they have already been modified by the lender.