Translation of Stuttgart in German

I want to improve my level of English. Have you ever been in the U.S. and in which states have you been? I've been in England, Scotland and Ireland, but unfortunately, I have never been to America.
It is late here. I will summarize a few points we discussed and I am looking forward to work with you on this project, hopefully for a long time. I have seen that you have already added a few words.
I'd be very happy if we could write me. I have read your blog. Are you from the U.S.? Where exactly are you from, which state? I have visited Chicago last year because my grandma lives there.