The U.S. Congress, a bicameral legislature, forms the backbone of American democracy. Consisting of the Senate and House of Representatives, it balances state and population-based representation while wielding significant constitutional powers to create laws, levy taxes, and oversee the executive branch. Congress's complex legislative process involves committee work, floor debates, and negotiations between chambers. Party politics, elections, and the relationship with other branches shape its functioning, while ongoing challenges include addressing polarization, reforming campaign finance, and tackling pressing national issues.