Bob Kerrey, a former Governor and United States Senator from Nebraska and unsuccessful 1992 candidate for the Democratic presidential nomination. United States Congress

US Senator Dave Karnes. Public Domain.

Senator Paul Simon and comedian Al Franken rehearsing for a Citizen Action dinner honoring Simon at the Mayflower Hotel, Washington, D.C. Jamie Howren

Bob Kerrey, former governor of Nebraska, former U.S. Senator, and Medal of Honor recipient for his service as a Navy SEAL in Vietnam, speaks at the LBJ Presidential Library's Vietnam War Summit on Thursday, April 28, 2016. LBJ Library photo by David Hume Kennerly.

Bob Kerrey, former governor of Nebraska, former U.S. Senator, and Medal of Honor recipient for his service as a Navy SEAL in Vietnam, speaks at the LBJ Presidential Library's Vietnam War Summit on Thursday, April 28, 2016. LBJ Library

Official portrait of U.S. Senator Mark Warner (D) of Virginia. United States Senate

Former Senator Bob Kerrey visited the Bureau of Medicine and Surgery on February 20, 2020. Surgeon General Bruce Gillingham presented him with a challenge coin. Navy Medicine, Flickr.

Tim Johnson, U.S. Senator from South Dakota. United States Congress.