Article I of the United States Constitution establishes the framework for the legislative branch of the federal government. This article outlines the structure and powers of Congress, which is a bicameral legislature consisting of the Senate and the House of Representatives.

Key Sections:

• Section 1: Grants all legislative powers to Congress, ensuring a separation of powers among the branches of government.
• Section 2: Details the composition and election of the House of Representatives, including qualifications for representatives and the process for filling vacancies.
• Section 3: Describes the Senate's composition, the election of Senators, and the qualifications required to serve as a Senator.
• Sections 4-6: Cover the procedures for elections and meetings of Congress, along with the rights and duties of members.
• Section 7: Explains the legislative process, including how bills become law and the President's role in approving or vetoing legislation.
• Sections 8-10: Enumerate the powers granted to Congress, such as taxation, defense, and regulation of commerce, while also setting limitations on both federal and state legislative powers.

Article I is foundational to the U.S. government's structure, emphasizing checks and balances through a detailed legislative process and clearly defined powers.