One late January night in 1966, President Johnson went to the Capitol to deliver the annual State of the Union address.
Johnson was at the peak of his power that night, and during the hourlong speech, he talked about his agenda for the year: Vietnam, social programs and expanding the war on poverty. But right in the middle, he offered up an idea that seemed to come out of nowhere when he proposed to change the term for a congressman from two years to four, concurrent with presidential terms.