How long can relatives get a green card after immigrating to the United States? Can the United States do a white paper when it is new here?

If there is no problem, you can get it in about a month, so you should be careful about these immigration procedures. If there is something wrong with your green card, you can wait a long time, but now you can go to China without a green card. When the green card arrives, let relatives send it back to China. Of course, you should inform your lawyer first to ensure that the steps are not wrong. Does the white paper mean that you can apply for returning to the United States without a green card? For the sake of so much typing, the landlord can give it to me. Thank you.