It has been more than a month since the American immigrant visa. Why haven't you signed yet? It's normal to sign it in a few months.

You mean the visa package hasn't been mailed to you yet? Or did you submit the application directly without a face-to-face sign?

If it is the former, you can only wait patiently.

The latter. If you don't submit an application to immigrate to the United States, the embassy will let you immigrate. Need to investigate the background, your application materials are complete and meet the requirements, and the guarantee is sufficient. The timetable is almost finished. The embassy will send you a cover letter. Can successfully immigrate.