And remember, to do the FAA PPL, you now need a visa. And for that you need the form from the US school, and so on.
I did my FAA PPL (just for fun) last March. No big problem, but you DO have to learn the "ground reference maneuvers" - S-turns along a line feature, turns around a point, and flying round a box. Not diificult if you have a PPL and some experience already.
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DO we need a B2 visa to rent an aeroplane and bimble off around California now, or not?