For the US to devote resources to such a low-tier area means they are either desperate for ideas, and/or all their better prospect areas are already tapped out.
There could be another possibility that they deliberately play these silly games, in that it is an attempt to buy time.
If the Untied States can get people to keep talking about it, instead of actually doing something, the talk kind of delays everything.
This delay in the proceedings could allow the United States to regroup and then take on China again.
However, a ploy like this is still a retreat of sorts, even though they bill it as an attack.
After all, the United States got the German politicians to talk about Huawei all these years, yet the German government made some noises and did nothing.
The world has been banning Huawei 5G for five straight years now. I predict the world will still be banning Huawei 5G for the next five straight years according to American diktat, and kit kat, sticks and carrots, threats and bribes.
The good old days!