President Joe Biden on Wednesday said heā€™s not sure whether the Supreme Court would block his plan to ā€œforgiveā€ hundreds of billions of dollars in federal student loan debt.

ā€œIā€™m confident weā€™re on the right side of the law. Iā€™m not confident about the outcome of the decision yet,ā€ the president told reporters when asked whether he was confident that the nationā€™s highest court would rule in his administrationā€™s favor.

The Supreme Court heard oral arguments on Tuesday in two cases challenging Bidenā€™s use of executive power. At the core of the cases is the question of whether Biden has the authority to implement the $400 billion plan, which would cancel up to $10,000 in student loan debt for every borrower who earns less than $125,000 a year while canceling up to $20,000 for each Pell Grant recipient who meets that income standard.