I agree. Judgement on love affairs and judgement on chip strategy are completely unrelated categories of judgement.

"Bad judgement" is a tool used in political rhetoric used to blame someone when there's nothing of any substance to blame them for.

However, all of this changes if it turns out that he gave his lover's company any kind of preferential treatment or that she was involved in China related lobbying.

This is what the investigation will focus on in my opinion. If they find anything at all then he will have to resign.