"The egg you see on my face is not egg, it's not on my face, and you are not seeing it. And if I did have egg on my face, so what? There's no shame in that. Hey, look over there, what is that? Someone with egg on their face. What a moron!"
That is the entire defense of Donald Trump, regardless of the accusation. Deny, diminish, deflect. Sadly, it seems to work on the rather large percentage of US voters who are, well, idiots. Fortunately, they are not the majority.