Coming from Mexico, you probably won't like the winters up here, but then you'd get that in NY, Vermont, Ohio, etc, etc. I think our road and mountain bike scenes are great! The Michigan Mountain Biking Association (www.mmba.org) is very active and there's lots of great members. Novi MI has a very active mtn bike scene around the "Tree Farm" trails.
Road riding can be problematic, but near Novi is a big park, Kensington Metro park, where many people ride. Just south of Novi is the start of Hines Drive, which is 30 miles long and just about the best road riding in the western suburbs.
The Ann Arbor Velo Club (www.aavc.org) is a great club and very active in road racing. There's club rides nearly every day from March to September.
There's great road racing, mountain bike racing and cyclocross racing series in the Metro Detroit area, so if you can handle the winters you can ride and race from March to December.
Good luck with the job!