This post is part of a series about what to do while your Priority Date is retrogressed, once you have received your I-140 Approval Notice from USCIS. It applies to cases which will be processed through US Consulates, and not to Applications to Adjust Status filed in the US.

You can only enter the US if you have a valid medical exam, which expires six months after it was issued. If your case is not finished by the six month mark, once your Priority Date is current, the Consulate will send you a letter asking you to submit a new medical exam.