Funny enough Airway I have been awaiting just that to be said
Like when I was stopped by a BAA security guard at a London airport photographing my company's acft. 'FAA rules and they require it'
Pointed out that this was a Russian aircraft under UK DOT, Police and UK CAA jurisdiction...didn't have an answer to that
Although the US may require this statement to be made any enforcement on a non US aircraft/carrier would be totally at the discretion of the non US carrier...and one can see any further escalation and/or bans resulting in a variety of retaliatary actions by other states to US carriers due Chicago Convention, bilaterals etc.
Pathetic