回複：請叫Pjiang老師幾個讓我頭疼的問題。 多謝了！

我本人和我的律師原來都以為我的兩年義務因為J１完成而自動不成問題了。

If you were living in 1989, both your lawyer and you are right. Things changed after 1990. And now it is clear that the 2-year residence requirement is personal to J-2, not depending on J-1.

現在我知道DOS允許J２在J１死亡或與之離婚的情況下申請豁免。
I do not know where you got this. And I doubt its validity if J-2 residence requirememnt is not dependent on J-1.

我有什麽其他選擇去申請豁免嗎？
Have you tried "no objection letter" waiver by contacting the Chinese consulate?

更倒黴的是， 才發現我的基於LC的I－140應該是 EB２， 而我的律師錯誤的遞成了EB３。LC（PD，2003年１１月）應該沒錯（職位要求碩士，我也有碩士學位）。請問老師， 如何改正I－140的錯誤呢？按照５－30－08 memo的， 我的LC已經過期了，我要從PERM從頭開始申請嗎？我還在原來的職位，同一個職位可以申請勞工卡兩次，而不同類別的I－140嗎？

Your approved I-140 is still valid (and forever) unless it is used (for I-485) or revoked. Since your I-140 has not been used for your I-485, you can still use it later after you get the J waiver and file another I-485.

因為I－485被拒，我是否還可以申請六年後的H１延期呢？

If USCIS strictly follows the memo, you cannot ask for the after-6-year extension; But you should urge your lawyer to seek favorable USCIS discretion in your case because you were so innocent.

我的兒子很快要上大學了，如果我們在他２１歲時還拿不到GC，他還能轉成F1嗎? 會不會因為曾經I-485被拒，而不能轉F１呢？

Bless for him! did your file I-485 for him? if yes, he cannot get F-1 status anyway.