The DJT Executive Order removing birthright citizenship on Jan 20, 2024 applies to future undocumented immigrants, and is based on the part of the 14th Amendment to the US Constitution passed in 1866 by the US Congress and ratified by states in 1868. The 14th Amendment came after the US Civil War and was aimed at giving emancipated black slaves citizenship. The US Supreme Court gave US citizenship to one Chinese immigrant in US vs Wong in 1898 following the Chinese Exclusion Act of 1882. This did not set a precedent as at that time immigration from Asia was extremely restricted and the case was not intended to apply to millions crossing borders as this did not exist. For most of the period 1900-1960 Asian immigration was negligible because of the laws in existence until the Kennedy administration. Immigration from Mexico was mainly for US agricultural farms. When this led to a surge in illegal crossing of the US Mexican border in 1944-1954 a similar situation to today existed when Eisenhower conducted Operation Wetback in 1954 to deport about 1 million undocumented immigrants. ...