President Kennedy chartered China to immigrate to the United States.

If you mean immigration policy, it should be the next President Kennedy. In 1960s, President Zhan Sen signed a document to open the United States for Asians (including China) and Africans to immigrate to the United States. At that time, China had no diplomatic relations with the United States, and all the places were occupied by immigrants from Taiwan Province Province. Immigration in the United States occurred after President Carter signed an agreement on the establishment of diplomatic relations with China. In fact, immigration began in the 1980s with Reagan, the next president of President Carter.