"We believe strongly that it is time to improve the accountability system for our colleges and universities that collectively receive $150 billion in federal student aid revenue each year," the Senators wrote in the second letter in their series of college accountability efforts. "This rule is a significant opportunity for the Department to improve upon proposals that were presented to negotiators and to further strengthen the outcome for students We strongly encourage you to hold colleges accountable by banning mandatory arbitration requirements as a condition of the receipt of federal taxpayer dollars."