WASHINGTON (AP) — President Lyndon B. Johnson knew the legislation he was about to sign was momentous, one that took courage for certain members of Congress to pass since the vote could cost them their seats.

To honor that, he took the unusual step of leaving the Oval Office and going to Capitol Hill for . It was Aug. 6, 1965, five months after on civil rights marchers in Selma, Alabama, gave momentum to the bill that became known as .

The Associated Press