留学生美国j1签证吗？
j1签证一般属于交流学者，有政府资助或通过政府机构申请的学术目的的人员，而且一般有固定的学习时间期限，过期就无法继续在美国学习。j1的家属是J2。如果签证上I-94的期限为D/S(depending on status)，说明可以一直待到J1完成学习，但如果I-94标明fixed period，表示有固定期限。如果在固定期限内，需要延长J1停留时间，可以申请extension。
J-1 Exchange Visitors and accompanying family members may be admitted to the United States for the amount of time necessary to complete their program. The applicant MUST prove the intent to return to his/her home country upon the program’s conclusion to receive the J-1 visa.
J-1签证申请者必须证明在交换访问项目结束之后有打算回到自己的祖国，否则是无法获得J-1签证的。
J- 1 (Exchange Visitors) are people coming temporarily to the U.S. to teach， study， lecture， observe， conduct research， consult， demonstrate specialized knowledge or skill， or receive training. J-1 visa holders (and J-2 dependents) must have and maintain sufficient funds to support themselves and not become a public burden. All J-1 visa holders must have been physically present outside the U.S. (or Guam or the CNMI) for the two-year period immediately preceding application for a visa or for admission to the U.S. under the J-1.
J类(J-1)交流访问学者及陪随家人来美国是暂时进行教学、学习、主持讲座、观察、从事研究、咨询、展示专业性知识和技能或进行训练。所有J-1签证持有人(及J-2家属)必须具备足够的财力来养活自己并且不能沦为美国社会的负担。所有J-1签证持有人必须在申请签证或进入美国(或关岛、北美自由贸易区CNMI)前的两年时间里在世界任何地方待过。