我父母绿卡面试已经定在12月底在广州，因为一些原因他们去不了。请问这个情况除了改面试时间，是否可以暂停面试和体检，
-You need to contact the US Consulate to reschedule the interview. If you don't do anything, the US Consulate you abandon the case and they will suggest NVC to cancel your case.
以后他们是否可以去办理探亲签证（以前探亲过三次）到美国，然后再resume 他们绿卡的case，在美国体检和面试。
-Due to immigrant intent, they may have trouble to enter US using B2 visa.
这种情况下，不知道探亲签证是否会给，不知道绿卡的case是resume哪，还是重新开始，start over? 请帮忙解答，多谢
-If NVC cancel your case, you can do it all overall again to USCIS as before.
-You need to contact the US Consulate to reschedule the interview. If you don't do anything, the US Consulate you abandon the case and they will suggest NVC to cancel your case.
以后他们是否可以去办理探亲签证（以前探亲过三次）到美国，然后再resume 他们绿卡的case，在美国体检和面试。
-Due to immigrant intent, they may have trouble to enter US using B2 visa.
这种情况下，不知道探亲签证是否会给，不知道绿卡的case是resume哪，还是重新开始，start over? 请帮忙解答，多谢
-If NVC cancel your case, you can do it all overall again to USCIS as before.
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