In this article, DoD official Pete Hays not only insists the US is not developing space weapons, but points out a hard truth: if the Air Force wanted them, it couldn't pay for them.
COMMENT: Technically, any satellite which might be maneuvered into another can be used as a weapon, as can some ground-based missiles we have now. But Hays' point is an important one. Space-to-space weapons are a complex technology - achievable, certainly, but complex and expensive. The tacair generals would make short work of a proposal to divert money for something we don't have an overwhelming need for.