On August 6, 1965, President Lyndon B. Johnson signed the Voting Rights Act into law. This landmark piece of legislation made discrimination based on race illegal. This law protected the right to vote for all citizens; forced states to obey the Constitution; and reinforced the 15th Amendment. The Act includes provisions to regulate elections. Congress subsequently amended the Act to expand its protections. And in 1971, the 26th Amendment was passed, changing the voting age to 18 years of age or older.