A U.S. senator is elected for a six-year term. Senate elections are staggered, so only about one-third of the seats are up for election every two years. The longer term is meant to give the Senate more stability. There is no limit on how many terms a senator may serve.
Unofficial study aid. Questions and answers are copied from USCIS publications; Chinese translations are ours and are for understanding only. Your interview is in English (unless you qualify for an exemption). Always check uscis.gov for the latest information. Not legal advice.