The 106th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1999, to January 3, 2001, during the last two years of Bill Clinton's presidency. The apportionment of seats in the House of Representatives was based on the 1990 United States census. Both chambers maintained a Republican majority.

William Victor Roth Jr. was an American lawyer and politician from Wilmington, Delaware. He was a veteran of World War II and a member of the Republican Party. He served from 1967 to 1970 as the lone U.S. Representative from Delaware and from 1971 to 2001 as a U.S. Senator from Delaware. He is the most recent Republican to have served as a U.S. Senator from Delaware.