aside from just wiping everyone's out immediately and making all tuition free, you know what would be such an easy sell politically:

credit any payments of interest already made towards principal. effectively, make it so all monies that have been paid at this point are applied to the original borrowed amount. if you've already paid back more than you borrowed, you get a check for the difference.

i don't think it's clear how fucking high student loan interest has been on federal loans and for absolutely no reason because the department of education does not need to be making money.