A bit late?
The FAA only have jurisdiction over USA companies, US launches and some non-US companies who mostly or partly operate from the USA. I doubt Russia will be taking too much notice of this and China certainly don't seem too bothered at the moment and the Norks don't give a rats ass.. Some others likely will agree with the principle though, eg launches from allied/friendly nations such as EU[*], India, Japan, New Zealand, maybe even the UK if we ever get a successful orbital launch site operational.
It's nice that FAA is thinking about the topic and trying to take a lead in standards, but we've known about this issue for quite some time now so it'd have been nice to do this 10 years or more ago.
* Yeah, the EU isn't a "nation", but ESA doesn't belong to any one nation.