What is the U.S. Capitol Building?

The U.S. Capitol Building serves as the meeting place of the United States Congress, which comprises the Senate and the House of Representatives. This iconic structure, located on Capitol Hill in Washington, D.C., is not only an essential element of the U.S. government but also a symbol of American democracy. It is where lawmakers gather to debate and pass legislation, provide oversight of the executive branch, and represent the interests of the American people. The building's design reflects the ideals of democracy and is an important part of the nation's history and governance.

In contrast, the other options refer to significant but distinct locations associated with the U.S. government. The President's residence is located in the White House, while the Supreme Court has its own building where justices preside over legal cases and issues. Each of these locations plays a unique role in the functioning of the government, but they are not where Congress convenes.