Signed by Lyndon Johnson on April 11, 1968, days after the assassination of Martin Luther King, Jr., the Fair Housing Act prohibited discrimination in most residential real-estate transactions on the basis of race, color, religion, or national origin (later amended to include sex, disability, and familial status). It ended de jure segregation in American housing markets and provided the enforcement backbone the Supreme Court invoked in Jones v. Alfred H. Mayer Co. (1968) alongside the Civil Rights Act of 1866. Persistent residential segregation remains a subject of ongoing enforcement and litigation.