回複：我今年年初用J2簽證到美國短期探親，

我必須改簽F1嗎？Not necessary if not RA or TA

可不可以在美國這邊轉簽證呢？Yes if your J-1 & J-2 are waived for Two Year Residency Requirement.

畢業以後還受J2的Two Year Residency Requirement的限製嗎？No if your J-1 & J-2 are waived for Two Year Residency Requirement.