128 House Republicans filed an amicus brief to the Supreme Court opposing student-debt relief.
New data found that nearly 12 million borrowers in their districts would benefit from the relief.
On Friday, the department unveiled data showing the breakdown of student-loan borrowers who applied, and were deemed eligible, for President Joe Biden's up to $20,000 in debt relief by congressional district.
Over the past few weeks, 128 House Republican lawmakers filed an amicus curiae brief to the Supreme Court ahead of oral arguments on February 28 urging it to strike down Biden's debt relief.
As the Education Department has previously said, over 40 million borrowers in total would qualify for Biden's debt relief, and of the 26 million borrowers who applied for the relief before the online application closed in October, 16 million of them had been fully approved.