
As you mentioned, you can get decent EMPs from chucking a few nukes around - and they have so many of these I don't understand what the problem is with using a few.
And what could be more environmentally friendly than a nice bit of recycling. Grab the obsolete stuff from the last two or three decades and re-brand them as EMP'ers.
Surely that should keep the hippies happy, no need to worry about how to dispose of the material we use to make nuclear weapons when they become out of date, we'll just use them instead.
I'm sure there must be a few 3rd World countries the US can pretend are threats to its existence, so plenty of places to get some practice in.
And if the technological threat posed by some random African or South American nation isn't enough to scare your average American into green lighting another war - just mention you're doing the world a favour by reducing your stock pile of nukes. So it's all green and peaceful and environmentally rosy.
After all if you can convince Americans that an impoverished, 3rd World nation like Iraq posed such a threat to their existence that they should fear going on holiday in their own country (yes really - I met a whole bunch that were scared about vacationing in Hawaii after it initially kicked off in 2003), surely it should be no problemo to convince them another one needs to have the internet sabotaged via bucket loads of nukes.
We can just tell them it'll be good practice for when the Chinese invade in a few years.
Oh and probably best to keep the geography to a minimum as you have been doing - no need for anyone to realise that your average African nation isn't a hop, skip and jump away from invading the US. Again, yes really - most of the people that were scared about going on holiday in their own country, thought Iraq could somehow attack them in the US. They couldn't understand why I was laughing or why I thought they were over-reacting more than just a tad.