Many of these issues with regards race and ethnic background strengthened America's democratic fundamentals.
One of these landmark cases was of Loving vs. Virginia, a civil rights case in which the United States Supreme Court proclaimed that Virginia's anti-miscegenation law, the "Racial Integrity Act of 1924", unconstitutional, thereby ending all race-based legal constraints on marriage in the United States. The accused, Mildred Jeter, of African descent and Richard Perry Loving, of Caucasian race, reside in the Commonwealth of Virginia but married in June of 1958 in the District of Columbia. They had left Virginia in order to elude a state law prohibiting marital union between a 'white person' and a 'non-white person.' The Supreme Court declared Virginia's law unconstitutional which in turn paved the way for the abolition of all race-based marriage statutes in the United States.
Another case significant to the equality of race was the Chinese Exclusion Act of 1882, barring immigration for ten years.