I think it might have to do with how much more available the tools are here (GPUs and such) and how it would be harder to repress disparate fake videos here tha

I think it might have to do with how much more available the tools are here (GPUs and such) and how it would be harder to repress disparate fake videos here than, for example, a unitary country with a state monopoly on news media (to those of you looking to read my comment in as stupid a light as possible that is not a commendation of such systems). So then it goes back to the original point, which I believe is that the US is "uniquely susceptible" to the blowback of destructive deepfakes which is concerning to policymakers and think-tanks. The real thing I want to be a pedant about here is how the suggestion solution is to "halt the commercial development of deepfake technology". First of all, you can't keep that cat bagged forever, and secondly a lot of such developments aren't commercial, they're Foss projects. You can't really mettle with those too much without cracking down on them in messier ways.