A college in Kentucky pays for all its pupils' tuition. There's just one catch - they have to work for it.Read more
BBC News, Washington
Lottie could not afford rent and food after the Student Loans Company took back her overpayment.
The Democratic White House hopeful's plan would forgive the debt of around 45 million Americans.
Dwytt Lewis is one of the 400 Morehouse College graduates whose debt is being wiped by a US billionaire.