Re: Hit the US?
I doubt we have a missile that can do much to it. The US have used an SM3 to kill a malfunctioning satellite, but that is a big box of bits. This space station is basically a big empty tube. So a small warhead designed to fragment and hit anything it gets near to, is just going to make holes in it. Like shooting a big rubbish bin with a shotgun. It'll let the air out, if the thing's still pressurised, but might not do much more.
The Chinese have also blown up a satellite. But the bigger the warhead you carry the smaller or slower your SAM is going to be. So as you don't need a big warhead at those speeds, you're unlikely to want to design a SAM that needs to be the size of an ICBM in order to lift its own warhead.