To answer the OP:
It's much easier to keep an FAA licence and IR current than an EASA one. Once the licence has been issued then you will never need to see an Examiner again, even if it "lapses" - a flight with an instructor is all that is required (a flight review for the licence and an Instrument Proficiency Check for the IR).
Maintenance is much more straightforward (no 50hr checks, you only need 100hr checks if you are operating for reward, engine and prop life are at the discretion of the maintainer).
To be honest I think it tells you everything you need to know about our regulatory system that the government minister responsible for it flies under a flag of convenience to avoid it.