If the US is involved that is something else. The issue is that Taiwan might already fall before the US gets seriously in there. Submarines are complicated. Th

If the US is involved that is something else. The issue is that Taiwan might already fall before the US gets seriously in there. Submarines are complicated. The Taiwan strait is not very deep and any US subs would have to deal with UUVs in large numbers and sonarphones. It would be a difficult target. Shooting down satellites is a very risky proposition. If the US attempts that, the Chinese will retaliate. The US has a lot more to gain from satellites than the Chinese do. Once those satellites are shot down though the US has no accurate ballistic missiles. The ATACMS relies on GPS for good accuracy. There is no GPS-independent seeker for ballistic missiles in US service. It's also a slow and easy to intercept missile. It's not happening because, as a Chinese General put it, why today and not tomorrow? The more time goes on the cheaper and easier and quicker it will be, so there is no reason to rush it.