When did Sun Yuebin become an American citizen?

Did not enter the United States. Sun Yuebin graduated from the Performance Department of the Central Academy of Drama in 2008 and has been engaged in dubbing for more than 20 years, dubbing advertisements of many well-known enterprises such as Audi, Wuliangye, Haier and Bank of China, and dubbing many foreign films and China films. Has not been naturalized in the United States. During his stay in the United States, he completed Fast & Furious 9's China element dubbing.