The attorneys general of 21 Democratic states and Washington, D.C., as well as a pair of advocacy groups, sued the Education Department on Monday over a recent rule change to the Public Service Loan Forgiveness (PSLF) student debt relief program. The Trump administration finalized a rule change last week that said those who are engaged in what it called “unlawful activities” won’t qualify for student debt relief under the PSLF program, which allows government workers or nonprofit employees to receive forgiveness after 10 years of payments.