Interesting choice of words. 31 years ago was 1988, Joe Biden was running for President and had to drop out over a plagarism scandal where he didn't even bother to change the speech resulting in him lying about his own family history. And here's the headlines...
a href="https://www.businessinsider.com/plagiarism-scandal-joe-biden-first-presidential-run-1988-2019-3">Flashback: Joe Biden's first presidential run in 1988 cratered amid multiple instances of plagiarism
Fixed the link