Enfield was totally absent here from 1970 to 1995.I don't think RE's official presence in the US market is more than 10 years old. Even now, there's only about 120 dealership in the US. There aren't a lot of shops with a lot of experience servicing and maintaining these motorbikes. As far as "experienced mechanics", most cats working in service departments are "technicians", not mechanics, and the REs are old school mechanical machines.
Since 1995 there have been three importers. The latest and current one is RENA which took over import & distribution in 2015. They are a wholey owned subsidiary of RE corporate.