If the “satellite” is in a polar orbit, it must pass over the US many times. If they decided to “de-orbit” at just the right time, we would have no defenses in the proper locations to deal with it . . . just a thought.
Isn’t this exactly the scenario that the experts were warning us about after NK’s last nuke test a couple years ago? A polar orbit that would allow access to us from the southern hemisphere? Are you familiar with what I’m talking about - the expert who blew the alarms a couple years ago?