Are there any travel restrictions on O-2 visa? The answer to that is no,…

How long does it take to get a Green Card from O-1 visa?

You can file an I-485 form to have your status changed once your petition is approved. This will take roughly 6 months, and premium processing is not accessible for this form. Without premium processing, the O-1 visa to green card processing time should take around a year.