[woodruffw]

It is in the purview of the government. That's not the question; the statutory justification for a ban is the question.

Every single country on this planet of ours engages in some form of protectionism, whether we like it or not: again, it isn't clear what casuistic justification explains singling out China's protectionism, and even then banning just one company involved in it. Italy doesn't let us sell the sawdust we call "Parmesan," but I'd prefer it if we didn't ban selling the real thing in retaliation.

Finally, for the national risk: what, precisely is the national risk? You can argue (correctly!) that they're a bad actor given this news, and I would be more than happy to see those involved in the surveillance of journalists see the inside of a court. But this doesn't even come close to meeting the standard for a national security risk, weak as that standard has become.