Which ones gave back the money? This is an old source[0], but it repeatedly says "donate or return" and then has a handy filterable table at the bottom where you can discover for yourself that "donate or return" means "donate."

[0]: https://www.marketwatch.com/story/here-are-the-politicians-p...

Speaking of people with no shame, what are his parents up to?

If you've already won the election, who cares about giving back the money?