By the way, if I understand this correctly, the USA is an ICAO compliant state, there are some FAA certificates that are not ICAO-compliant. They would be the new Sport Pilot certificate, the Recreational Pilot Certificate and an ATP certificate when the holder does not meet the ICAO experience requirements. All of these certificates will have a restriction placed on them that says they do not meet ICAO standards.
Waiting to be corrected.
I'm only refering to the format of the Certificate, not to the status of the US system. Hope this clears it up.