Some variation of this article appears every 6 months like clock work. It’s being talked about plenty, more than the actual threat when you get right down to it. In order to nail the entire country you’d need a very large bomb at a very high altitude (EMP is line of sight, it doesn’t turn corners, and it loses strength very quickly). Anybody that can do that has easier means to take us out.
Not to mention total annihilation. A massive EMP strike would involve nukes. The military is hardened against EMP, not to mention all those boomers out there chock full of Uncle Sam’s finest. No...an EMP strike against us would be cause for a devastating nuke strike....think cold war type strike.
An errant tree limb in rural Ohio did a pretty good job a few years ago — took down the entire NE US and E Canada power grid.
[I still have a hard time believing that was the cause, however.]