With the help of John Powell and Earnest Sevier Cox, Plecker drafted and the state legislature passed the "Racial Integrity Act of 1924". It recognized only two races, "white" and "colored" (black). It essentially incorporated the one-drop rule, classifying any individual with any amount of African ancestry as "colored". This went beyond existing laws, which had classified persons who had one-sixteenth (equivalent to one great-great-grandparent) or less black ancestry as white. In 1967, the United States Supreme Court invalidated the law in Loving v. Virginia.