Three undergraduate students from the Department of Engineering Physics of the Tsinghua University, Beijing, China, arrived at USD last week and will spend one and half month here as summer interns. They came here with J-1 visas. Normally, when they go back from here, they will have to stay in China for two years before they can apply again for J-1 visas to study in graduate schools in US. However they just finished the third year study in their university and want to come to US as graduate students next year. In order to allow them to do so, USD helped them obtain the waiver of the exchange visitor two-year home-country physical presence requirement. This way, they can come to gain research experience at USD without worrying any delay in their applications to US graduate schools a year later.