Does the U.S. have the needed weaponry?
Obviously, it depends on the nature of their technology, but I’d say no.
As long as we avoid becoming a spacefaring civilization (as we have been for decades, de facto, with our insane space policy) we will always be on the defense. We need to be able to take the offensive against a space-borne attack, and we don’t even have proper picket lines up in the solar system, which means that there’s a good chance that by the time we find out about them, they’ll be at our front door, and it will be too late.
I do think that we’re good against zombies, though, at least in the U.S.
[Update late Monday afternoon]
Welcome, Instapundit readers! Just a reminder that as long as we obsess about safety in space, we won’t have a chance against an invasion. We’re over halfway to the fundraising goal, with a little less than half the time remaining.