As long as Achilles keeps it away from his heel, there's no problem. People like this author were also the ones telling us SDI was a bad idea. It's a good thing we ignore them....just as we should continue doing.
The first nation with a working battle station in orbit with particle beam and laser weapons pretty much will be in control for, say 1000 years. Whose flag would you like to be painted on it?
How would it be a bad idea? Not many other countries are even close to duplicating it.
We've already done this. Moreover, GPS, comsats, and reconnaissance assets all orbit at varying altitudes and inclinations. We have as distributed a space architecture as is technically possible.
What we really need is better situational awareness in space -- who else is up there, where they are and what they are doing in both space and time. This need preceeds space-based (or even ground-based) weaponry. But to unilaterally give away our option to deploy space weapons would be foolish beyond measure. Needless to say, that's exactly what a Democrat administration would do.
N. Korea's missile escapade should show the world we need space based defense systems. We can hardly depend on the impotent UN to do anything to protect us.