Realistically pretty much anything in orbit is a viable space to space weapon (for related reasons all space propulsion is ITAR controlled) so it was never practical to ban them. Space to earth, maybe, but that isn't unless it hits vague 'WMD' categories, and I'm not sure space to ground is necessarily what the US is declaring here.
I suspect whatever capability the US is referring to is far more "counter space" than WMD in scope and an incremental improvement on kinetic and electronic warfare capabilities it's long had. You can do a lot of irresponsible damage in to space assets with ground launched anti-satellite capability, as multiple tests have already demonstrated...
I suspect whatever capability the US is referring to is far more "counter space" than WMD in scope and an incremental improvement on kinetic and electronic warfare capabilities it's long had. You can do a lot of irresponsible damage in to space assets with ground launched anti-satellite capability, as multiple tests have already demonstrated...