8老师,我广州面试要求我补材料,目前还没有得到进一步通知。请问您关于入美时限的问题,如果Eb1a最终批准通过了,是不是要按照体检的时间计算,半年内必须入美?谢谢您 -No. The immigrant visa normally is valid for 180 days from the visa issued date, so you need to enter US before the visa expires.