Rails jobs in USA



maybe thats a little bit off-topic but there’s something I wanna know.

which state or city id the heart of web developer jobs in america? I
mean even if I somehow lose my job, in which city I can find a new

and do you know the procedure for immigrant programmers; I mean visa
sponsorship; and does small companies seek for foreign programmers?

can you give experiences and recomendations on this subject?

thank you in advance