U.S. immigration policy toward the People's Republic of China bloc. In February 1950, after months of hard bargaining, China and the Soviet Union signed the Treaty of Friendship, Alliance, and Mutual Assistance, valid until 1980. Many Americans were at a loss of what to do in regards to foreign policy concerning mainland China. The debate which took place in the United States as a result of the removal of the Kuomintang and Chiang Kai-shek to the island of Taiwan centered on Republican charges that the Democrats "lost" China. "Without question, the critics had by early 1949 convinced many Americans that Truman was, shockingly, abandoning China, China being equivalent with
Politics of the Republic of China this structure remains in place, the President Lee Teng-hui in 1991 unofficially abandoned the government's claim of sovereignty over mainland China, stating that they do not "dispute the fact that the Communists control mainland China." However, the National Assembly has not officially changed the national borders, as doing so may be seen as a prelude to formal Taiwan independence (the People's Republic of China has threatened to start a war if the government of Taiwan formalizes independence). It should be noted that neither the National Assembly nor the Supreme Court has actually defined what the term "existing national boundaries," as