What difficulties did Qian Xuesen encounter in the United States?

After the news of People's Republic of China (PRC)'s birth reached the United States on 1949, Qian Xuesen and his wife Jiang Ying discussed returning to China to serve the motherland as soon as possible. At this time, the United States, led by McCarthy, conducted a comprehensive investigation on the producers of * * *, and set off a craze in the United States to drive employees to be loyal to the US government. Qian Xuesen's certificate to participate in confidential research was suddenly revoked by the US military department because he was suspected of being a producer of * * * and refused to expose his friends. Qian Xuesen was very angry and asked to return to China on this ground.

1950, when Qian Xuesen went to the port to prepare for returning home, he was stopped by American officials and put into prison. Dani Danny kimble, then US Deputy Navy Secretary, claimed that Qian Xuesen was worth five divisions wherever he went. From then on, Qian Xuesen was persecuted by the American government and lost his precious freedom. He lost about 30 pounds in a month. Immigration raided his home and detained him in Temina Island for 65,438+04 days. He was not released until he received a huge bail of $50,000 from Caltech/KLOC-0. Later, the customs confiscated his luggage, including 800 kilograms of books and notebooks. He didn't prove his innocence until the American prosecutor reviewed all his materials again.