Easiest? Get a "piggyback" licence...
No flying, no training, no check-ride, no exams, just some paperwork and perhaps a month's wait (sometimes more, sometimes less).
You will need to fly to the US to collect it - but just tie that in with a holiday or even weekend city-trip.
Cheap, easy, done...
Fly safe, Sam.
PS I'm in Brussels if you want to know more about it (pros and cons).