He is a student visa, so he gave it on April 23, 1945 (45=9, 4.23=9)
The US Immigration Service believes that Qian Xuesen must leave; 10:00 am on November 15, 1950, a hearing was held in a small room at 117 West Ninth Street in central Los Angeles. (Another article stated as 11th Street) (11.15 10am = 8+1 = 9) , (117 West 9th Street = 9 )
On April 26, 1951, the U.S. Department of Justice finally ruled that Qian had joined the Communist Party of the United States in 1938 and issued a legal decision to deport him (Fig. 5). (4.26 = 12)
On August 4, 1955, the US Immigration Department signed the formal notice of the agreement of Qian Xuesen (8.4 = 12)