What are the main requirements for membership in the three branches of the federal government?

Answer 1

This is rather an odd question. One does not have a "membership" in any branch of the federal government. If you wish to be the President, or a Senator, or a member of the House of Representatives, for instance, you must qualify for the office, and then campaign for election. Most people who hold positions in the federal government are elected to the office. Supreme Court Judges are appointed by the President as the positions come available, then approved by the Senate. After the President is elected, he then appoints the people he wants to be members of his cabinet--Secretary of State, Secretary of Labor, Secretary of the Treasury, etc. I don't know what else you may have intended by this question. Perhaps someone else knows something additional to help you out. There are additional requirements: American citizenship ( in the case of President, "natural-born" citizenship )and each person, before taking office, must take an oath of office usually stipulating to "protect, defend, and support the Constitution of the United States". Whether one likes the term or not, this is a loyalty oath. There are, as well, certain minimum age requirements for being a Representative, for being a Senator and for being President ( and Vice President ).