Considering just the educational side:

For policies that have already been put in place, the 2016 revision (partially undone by the 2019 revision) of the Borrower Defense rules are an example.

For not-yet-implemented rules that have been proposed, rules imposing total cost limits on programs accepting federal loans, or imposing other cost and quality requirements on such programs, are common. As are simpler reforms like making income contingent plans the default repayment plan, and other rules governing direct loan servicing (an issue with the student debt crisis haa been servicers active directing borrowers into deferment rather than income contingent plans.)