父母B2延期，由于疫情, USCIS office关门，他们一直没做biometrics。目前Application support center还是没开门，不知道啥时候开。父母在8月底回国，我希望能在他们回国前做完biometrics。 想问: 如果 ASC 在他们回国前一直没开门，那该怎么办？能不做biometrics就回国吗？
-If they will leave US, they don't need to do the biometrcs. After they leave US, the B2 extension will be void, anyway. They need to keep the B2 extension receipt notice and bring it when they apply fro B2 visa or reenter US in the future.
