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"Every time I went to the villages, local villagers welcomed me warmly. Though it is not easy, I think it is worthwhile," Li said.

"Expertise of Chinese scientists in rice breeding and cultivation is a tremendous resource for the developing world," he said. "I believe it will continue to have an impact for years to come."

"Definitely. Remember when 16 classmates couldn't go to school last month because they had the flu? This pneumonia-like virus is more dangerous. In 2003, a similar virus called SARS (severe acute respiratory syndrome) broke out in China, infecting thousands and claiming 700 lives globally. You were not born then."

"East Asia is the manufacturing center of the world economy, and it can and should be revived first," he said. "That would be a huge boost for the whole world."

"Executive branch officials are not absolutely immune from compulsory congressional process - no matter how many times the executive branch has asserted as much over the years - even if the president expressly directs such officials' noncompliance," Jackson wrote, adding that "this result is unavoidable as a matter of basic constitutional law."