The White House said Friday it approved another $4.28 billion in student debt cancellation for 54,900 additional public service workers in what could be one of the Biden Administration's final act of loan forgiveness.Friday's approvals bring the total number of Americans who have had their loans forgiven through the Public Service Loan Forgiveness program to 1.06 million.Prior to President Joe Biden taking office, the White House said that a mere 7,000 had received forgiveness under the PSLF program.RELATED STORY | Student loan service providers face new allegations of illegal practicesThe PSLF program is among several the White House has touted in its efforts to reduce the burden of student loan debt for millions of Americans. The PSLF program was approved by Congress in 2007 and signed into law by President George W. Bush.Through the PSLF and other programs, the Biden administration has said it has approved forgiveness for 4.9 million borrowers, providing nearly $180 billion in aid.Four years ago, the Biden-Harris Administration made a pledge to Americas teachers, service members, nurses, first responders, and other public servants that we would fix the broken Public Service Loan Forgiveness Program, and Im proud to say that we delivered, said U.S. Secretary of Education Miguel Cardona in a press release.Public service workers are eligible for debt cancellation after making the equivalent of 120 qualifying monthly payments under an accepted repayment plan while working full-time for an eligible employer.When student loan borrowers began applying for loan forgiveness 10 years after the program went into effect, most were denied relief.The White House said it made administrative fixes that broadened the definition of qualifying payments. The result has been far more cancellations of debt being processed by the Department of Education.RELATED STORY | Navient to pay back student loan borrowers $100 million in federal settlementSince the program was created by Congress, it has not faced the kind of scrutiny from Republicans as other changes to student loans proposed by the Biden administration.While President-elect Donald Trump has been critical of broad student debt forgiveness, he and other Republicans have not been as critical of the PSLF program. Rep. Mike Lawyer, R-New York, has even proposed the Affordable Loans for Students Act, which would lower student loan interest rates and preserve the PSLF program.Sen. Mike Braun, R-Indiana, introduced a bill last year that would make it easier for those not currently working in public service to utilize the PSLF program.