The civilians haven't.
Imaging the vibrants and Third Worlders from L.A. to Seattle when their ATMs / welfare payments cease.
Or, South Korea or Japan.
The "canonical example" of EMP was Starfish Prime. Height of 250 miles IIRC. But there are ways to enhance the EMP effects with a smaller weapon. The question then in what trajectories are necessary to put the device at altitude, vs. the profiles for which the US is ready to shoot down the missile in the boost phase.
I’m one of those civilians now.
At least we don’t have a gay ass living on some French Island in charge anymore.