Just about all of them if you have an "N" registered aircraft!
Otherwise some sort of validation or authority would be required by the state you are in. In some countries an FAA licence doesn't carry a lot of weight.
You can fly an "N" registered aircraft outside the US without an FAA pilots licence if you have a licence to fly the aircraft in the particular country that it is currently in. One would assume that EASAland is the one country or maybe not.
FAR PART 61.3
(a) Pilot certificate. A person may not act as pilot in command or in any other capacity as a required pilot flight crewmember of a civil aircraft of U.S. registry, unless that person—
(1) Has a valid pilot certificate or special purpose pilot authorization issued under this part in that person's physical possession or readily accessible in the aircraft when exercising the privileges of that pilot certificate or authorization. However, when the aircraft is operated within a foreign country, a current pilot license issued by the country in which the aircraft is operated may be used; and
(2) Has a photo identification that is in that person's physical possession or readily accessible in the aircraft when exercising the privileges of that pilot certificate or authorization. The photo identification must be a:
(i) Valid driver's license issued by a State, the District of Columbia, or territory or possession of the United States;
(ii) Government identification card issued by the Federal government, a State, the District of Columbia, or a territory or possession of the United States;
(iii) U.S. Armed Forces' identification card;
(iv) Official passport;
(v) Credential that authorizes unescorted access to a security identification display area at an airport regulated under 49 CFR part 1542; or
(vi) Other form of identification that the Administrator finds acceptable.