The correct answer is: "was ruled unconstitutional by the Supreme Court."
The Chinese Exclusion Act of 1882 was a federal law that prohibited Chinese immigrants from coming to the United States and prevented Chinese immigrants who were already in the country from becoming citizens. The law was upheld by the Supreme Court in 1889 in the case of Chae Chan Ping v. United States, but it was later modified by the Magnuson Act of 1943 and eventually repealed by the Immigration and Nationality Act of 1965.
While the Chinese Exclusion Act did result in the deportation of some Chinese immigrants, it did not result in the deportation of half of the Chinese in the United States.