What former KKK members have also been members of congress?

Several former members of the Ku Klux Klan have served in the U.S. Congress, most notably Senator Robert Byrd from West Virginia, who was a member of the Klan in the 1940s. Byrd later renounced his Klan affiliation and became a prominent Democratic leader in the Senate. Another example is former Congressman John William "Bill" Smith, who was a Klan member in the 1950s. These cases highlight the complex and often troubling histories of certain political figures in American history.