Elizabeth Warren’s plan for student loan debt forgiveness sounds great in theory. But it neglects one very important group of people: those who already paid back their student loans.

One father reminded Warren of this during a face-to-face conversation at a presidential campaign event in Iowa this week: “I just wanted to ask one question,” he said, “My daughter is getting out of school. I’ve saved all my money. She doesn’t have any student loans. Am I going to get my money back?”