美国j类签证是什么？
J 1签证是为参加美国政府资助项目的人而设置的，他们可以在这些项目中从事研究、学习或教学。 J-1 visas are for people who will participate in exchange programs that are funded by the U.S. government， such as research， study and teaching projects. The purpose of these exchanges is to promote professional development and cultural understanding between Americans and citizens from other countries; you must be sponsored by an approved organization before getting a visa to take part in one.
The State Department maintains a list of all organizations with approval to sponsor J-1 Visa holders， which can be found here： (you'll need to use Google Translate on this page if you don’t speak English). It's important that your sponsoring organization have been designated as a "host" or "cosponsor，" so make sure any program you plan to attend has a sponsoring entity included among their approved sponsors. Also check out the J Program Search Tool ， where applicants can look up approved institutions， exchange organizations， and other participants in various fields.
You may also want to search the Internet to see whether there is information about specific types of educational opportunities available at foreign universities; most of them post course catalogs online. If they do not， try contacting the university directly or asking a trusted friend to call on your behalf. Checking on these kinds of things beforehand helps ensure that whatever project you choose will actually go through with having its own host institution and cosponsoring agency；two key requirements for obtaining a J-1 Visa. For more detailed information about applying for a J-1 visa， visit the National Visa Service website： or contact a U.S Embassy near you. There is no fee associated with applying for this type of visa， but keep in mind that it does require some formality——the embassy will interview you in order to verify that you meet all criteria before issuing your paperwork．Make arrangements well ahead of time so that nothing holds you back when it really matters！ You should receive notification within two weeks after attending your appointment at the consulate/embassy. Once issued successfully，your passport contains a valid multiple entry nonimmigrant visa stamp indicating “J-1” status， along with an