The Voting Rights Act of 1965 was signed by President Lyndon B. Johnson: http://time.com/3985603/voting-rights-act-1965-history/
Transcript: https://www.ourdocuments.gov/doc.php?flash=false&doc=100&page=transcript
https://www.nps.gov/articles/votingrightsact.htm
https://www.archives.gov/legislative/features/voting-rights-1965
http://www.history.com/topics/black-history/voting-rights-act