I do not see it appropriate to link between the rejection or acceptance of the BlackRock application and Halving Bitcoin, because in my opinion Bitcoin has overcome this effect as we have seen how the price recovered after the recent drop at a record speed.
Halving has a significant positive effect on the Bitcoin price regardless of whether the BlackRock application is rejected or accepted, but the positive effect is probably much greater if it is approved.
As for a plan by America to attack the cryptocurrency industry, this already exists, but it failed every time and will fail this time as well. Bitcoin has become more powerful and reliable.