Reasons:

来源: usedtobeadoctor 于 2007-09-17 07:29:49 [] [旧帖] [给我悄悄话] 阅读数 : (177 bytes)
回答: 还是 - 回复：请高手指点！ 由 pjiang 于 2007-09-16 20:07:38

1. For some people their PD is not current, so they can't co-apply at the same time.
2. For some people whose PD is current, they want to save money in case I-140 is denied.

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