Student-loan borrowers are taking on debt they can't pay off. There's a renewed push to prevent that.

Sen. Elizabeth Warren is co-leading an effort to prevent student-loan borrowers from taking on unmanageable debt. Daniel Heuer/Bloomberg via Getty Images Democratic lawmakers reintroduced legislation that would prevent unmanageable student debt burdens. It calls for strengthening accountability in the system that determines whether schools can receive federal aid. The Trump administration recently advanced its own proposal on college accreditation. Democratic lawmakers want to hold colleges…