Magnuson was elected in
1952 as a
Democrat and was re-elected four times, serving from January 1953 until January 1963. Magnuson was named to the Committee on Merchant Marines and Fisheries in 1955. During his time in Congress he served on the Appropriations Committee subcommittee on
Department of State, Justice and Judiciary, and the
Department of the Interior. He also served on the Public Works Committee with oversight over the
United States Army Corps of Engineers,
Bureau of Reclamation, and the
Atomic Energy Commission. Magnuson was on the House floor during the
1954 United States Capitol shooting, when Puerto Rican nationalists shot up the floor of the 83rd Congress in 1954, and he was shot through the sleeve. The nationalists, identified as Lolita Lebrón, Rafael Cancel Miranda, Andres Figueroa Cordero, and Irving Flores Rodríguez, unfurled a Puerto Rican flag and began shooting at the 240 representatives who were debating an immigration bill. He was on the phone quickly after with
The Seattle Times during the ruckus to give them the scoop, which his colleague and future Speaker of the House
Tip O'Neill recorded in his memoirs. In 1958, Magnuson escaped serious injury in a plane crash. He appeared in a newspaper photo, a hospital identification tag pinned to his blood spotted shirt, sitting in Northwestern Hospital in Minneapolis, where he was taken following the Northwest Airlines plane crash. Magnuson was one of 60 passengers who escaped death when the plane crashed into a corn field and burst into flames. His opponent for Congress that year complained about all of the sympathetic free publicity Magnuson received as a result of the incident. At least 11 U.S. Army service members were on board, and Magnuson recommended that Private First Class Raymond C. Maruschak receive the Soldier's Medal, crediting him with saving many lives that day. Maruschak and another soldier ripped a hole in the fuselage large enough to get all of the passengers out. On January 30, 1959, Magnuson introduced a bill to establish a
shield law to keep reporters from having to reveal their sources. On February 2, 1959, he introduced a bill to grant a second income tax exemption to college students who held down a job. On February 7, 1959, he was named to the board of oversight of the
U.S. Air Force Academy at
Colorado Springs for 4 consecutive years. On May 22, 1959, Magnuson voted for an addition to the public works bill in an Appropriations subcommittee for $724,000 to start the Greater Wenatchee reclamation project. On August 4, 1959, Magnuson said about the upcoming
Khrushchev visit, "What Khrushchev sees here may help guard against a fatal miscalculation on his part."On January 21, 1960, the
Bellingham Labor News said that as a member of the Public Works Committee, Magnuson sponsored a resolution to authorize the U.S. Army Corps of Engineers to review flood control studies in western Washington. On that same day, he was appointed to become a charter member of the
Democratic Study Group. In 1960, as a member of the Appropriations Committee, he voted against an additional $73 million for the development of
nuclear airplanes, according to
The Labor Journal. Following an extremely close victory in
1960, Magnuson lost his bid for a sixth term in
1962. He was employed by the
Department of the Interior from 1963 to 1969, and by the
Department of Labor from 1969 to 1973. ==Death and legacy==