A federal appeals court has temporarily blocked the Biden administration’s student loan relief program while it reviews a lawsuit by six Republican-led states. The challenge is being pushed by Nebraska, Missouri, Arkansas, Iowa, Kansas and South Carolina, arguing Biden’s plan to cancel up to $20,000 in student debt per person would deprive these states of tax revenue. The program had already been put on hold even after the Education Department had approved 16 million borrowers for up to $20,000 of relief — out of 26 million people who have applied for the program.