我的理解是：我递劳工卡和别人递NIW中的I-140都是我们要求移民的开始，也是移民局要求我们申请移民的第一步，既然移民局已经“公平的” 把递劳工卡的时间定义为Priority date，移民局也应该“公平的”把“向移民局申请至申请批准的天数”从Priority date开始计算。
-I agree with you and it is not fair to the PERM based I-140 case, but we have no choice at present until the law change. Actually this kind of unfairness is very often in immigration law. For example, a green card holder's spouse needs to take several years to get the green card, but a spouse of the person with pendingI-485 can use following-to-join to get the green card shortly.
