Civil Rights Act of 1866
The Civil Rights Act of 1866, , enacted April 9, 1866, was the first United States federal law to define citizenship and affirm that all citizens are equally protected by the law. It was mainly intended, in the wake of the American Civil War, to protect the civil rights of persons of African descent born in or brought to the United States. This legislation was passed by Congress in 1865 and vetoed by U.S. President Andrew Johnson. In April 1866 Congress again passed the bill to support the Thirteenth Amendment. Johnson again vetoed it, but a two-thirds majority in each chamber overcame the veto to become law without presidential signature.
William Moore McCulloch
As the ranking member of the House of Representatives Judiciary Committee, William McCulloch took a leading role in the civil rights movement. He introduced civil rights legislation months before Kennedy presented his act to Congress. Representative McCulloch had only a few of African-American constituents and so few votes to gain from introducing or supporting civil rights legislation. McCulloch's influence with the Civil Rights Act led President John F. Kennedy to declare, "Without him it can't be done." McCulloch was recognized by Kennedy's successor, Lyndon B. Johnson, under whom the act was passed, as "the most important and powerful political force" in passing the Act.