Question

“two-year home-country physical presence requirement"是指什么？

作为国家公派博士研究生，我的美方学校的DS2019表上instructions里面第一条就是这个，我不太清楚究竟是什么意思。请教知道的朋友，请赐教！

Answer 1

你用的应该是J1签证吧。参考这个：
http://studentaffairs.case.edu/international/current/j1/twoyearhome.html

Intent of the Requirement
The intent of the requirement is to have the home country benefit from the Exchange Visitor's experience in the United States. Exchange Visitors come to this country for a specific objective such as a program of study or a research project. The requirement is intended to prevent a participant who is subject from staying longer than necessary for the objective, and to ensure that he or she will spend at least two years in the home country before coming back to the United States for a long-term stay.

大概意思就是说：你使用J-1签证到美国，回国后必须工作满两年，才能以其他签证形式（比如H1，L1，或者永久居民等等）进入美国！

我也刚拿到表格，正在研究，O(∩_∩)O哈哈~
我的来信上是这么写的：
as an exchange visitor, you may be subject to a two-year physical presence requirement. If your are subject, you will not be able to enter the U.S. as, or change your status to a permenent resident, a temporary worker (H-1) or intracompany transferee (L-1) until you have fulfilled this requirement or recived a waiver from the Immigration Service.

Answer 2

需要这两年国内的体检报告。
我觉得是这意思。