모든 비이민비자의 소지자가 미국내에서 신분변경(다른 비이민비자로 변경)을 한 경우에는 반드시 해외의 미 대사관이나 영사관에서 영사절차를 밟아 새로운 비자를 받아야 미국입국이 가능합니다.
Please note that :
the I-94 card is not a visa and
1) if you travel a) outside the United States b) [for people i) getting extensions (a) of the same visa type: (b) after expiration (i) of your current visa]
c) [for people i) getting a different type of visa (a) than their current visa type, (b) such as change of status (i) from E-2 to F-1 or (ii) from any kind of nonimmigrant status to any kind of nonimmigrant status
:
1) just continue (a) with the next segment of the sentence:],
1) you must apply for a new visa a) at a U.S. embassy i) abroad ii) prior to re-entry into the United States.