You wrote about the US being unhappy about the allegation and I wrote that the US is being more unhappy with NK. You have yet to show that the US is being unhappy, but I have shown the US is existentially unhappy with NK. That the US is unhappy with the NZ case is, so far, your invention.
In case you missed it, was my own speculations not any official statements. At the moment they are more busy coping with domestic issues like the Hurricane that hit key west in case you haven't heard and the NK missiles they are lobbing over.
Basically it's election in NZ at the moment and I doubt Trump will want to interfere with another nation's election with him at center stage of his own but
I am sure the US intelligence community is going through right now.
Just have patience it's only been two days since it was released in NZ.