多谢老大指教。找了一下相关条文，
Two-year Home-Country Physical Presence Requirement Conditions - An exchange visitor is subject to the two-year home country physical presence requirement if the following conditions exist:
- Government funded exchange program -The program in which the exchange visitor was participating was financed in whole or in part directly or indirectly by the U.S. government or the government of the exchange visitor's nationality or last residence;
- Graduate medical education or training -The exchange visitor entered the U.S. to receive graduate medical education or training;
- Specialized knowledge or skill: Skills List -The exchange visitor is a national or permanent resident of a country which has deemed the field of specialized knowledge or skill necessary to the development of the country, as shown on the Exchange Visitor Skills List. Review the Exchange Visitor Skills List 2009.
这三条都不适用于我。我姑且假定移民官在我这个case是正确的。以此为前提，老大能不能说一下我以后要从J1换成H1-B还需要什么额外手续？谢谢。
