President Joe Biden's student loan forgiveness program may face a new threat from Senate Republicans even before the US Supreme Court rules on whether it can be implemented.

The Supreme Court on Tuesday will take up two challenges to President Joe Biden's student loan forgiveness program -- an initiative aimed at providing targeted debt relief to millions of student-loan borrowers -- that has so far been stalled by legal challenges.

Student loan borrowers are starting 2023 with a lot of uncertainty. The mired rollout of President Joe Biden's forgiveness program has created confusion for borrowers. Here are some of the big questions surrounding student loans this year.