I had a visa to marriage immigration seven years ago, but I was recently refused a tourist visa by the American Embassy. What should I do?

If your mother has a green card, your tendency to emigrate is even more serious. Did your mother go out with CR 1/IR 1, or did B2 change her identity directly after going out? If it is the latter, it is difficult for you to sign out your non-immigrant status.

What you want to do mainly depends on what you plan to do in the future. If you want to immigrate, you should apply for an immigrant visa honestly and wait for the schedule. If you don't want to immigrate, you must prepare proof materials for not immigrating.