Because all they can do is try to deflect.
Q: "Your husband has been known to make the occasional gaffe"
Jill Biden: "You can't even go there. After Donald Trump, you cannot even say the word gaffe."
Q: "I can't even say the word gaffe?"
JB: "Nope. Done. It's gone."
Q: "The gaffe issue is over?"
JB: "Over. So over." pic.twitter.com/NV8bAs7TP9
— The Hill (@thehill) September 27, 2020