Moss chaired the Consumer Subcommittee of the Senate Commerce Committee where he sponsored a measure requiring detailed labeling on cigarette packages noting the health hazards of smoking and banning tobacco advertising on radio and television. He also sponsored the Consumer Product Warranty and Guarantee Act, the Toy Safety Act, the Product Safety Act, and the Poison Prevention Packaging Act.
Early life, marriage, and descendants
Moss worked on the legal staff of the Securities and Exchange Commission from 1937 to 1939. He became a law clerk to Utah Supreme Court Justice James H. Wolfe in 1939. Moss was elected a judge of Salt Lake City's Municipal Court in 1940. He was on the Judge Advocate General's staff of the U.S. Army Air Corps in England during World War II. After the war Moss was reelected a Salt Lake City judge. In 1950 he was elected Salt Lake County Attorney was reelected in 1954.
He ran unsuccessfully in 1956 for the Democratic nomination for Governor of Utah. In 1958, Moss ran for the U.S. Senate against two-term incumbent Arthur V. Watkins, a close ally of both the Eisenhower administration and The Church of Jesus Christ of Latter-day Saints (see also Mormon), and also against J. Bracken Lee, a non-Mormon and former two-term Utah governor (1949-57), who was running as an independent after losing to Watkins in the Republican primary. The Republican vote was split in the general election, and Moss was elected with less than 40 percent of the vote.
Moss was elected to a second term in 1964, defeating Brigham Young University President Ernest L. Wilkinson. He was elected to a third term in 1970 defeating four-term Congressman Lawrence Burton. He gained national prominence with regard to environmental, consumer, and health care issues. Moss became an expert on water issues and wrote The Water Crisis in 1967. He worked to secure additional national parks for Utah and started important investigations into the care of the elderly in nursing and retirement homes, and into physicians' abuses of the federal Medicaid program.