What rule determines which members of congress and which as members of each committee?

The selection of members for Congress and its committees is primarily governed by party rules and seniority. Each political party establishes its own guidelines for appointing members to committees, often considering factors such as expertise, seniority, and political balance. Additionally, the House and Senate leadership play significant roles in committee assignments, ensuring representation aligns with party priorities and the interests of their constituents. Ultimately, these processes aim to create effective legislative bodies that can address a wide range of issues.