As a permanent resident on a green card, you may be content as you are. You should be able to continue living in the U.S. for the rest of your life. Provided the rules do not change, you renew on time, and you do not do anything to warrant deportation.
However, if you want total security, you may consider applying for citizenship. It has several advantages. These include getting a U.S. passport and the right to vote. You will no longer need to spend most of your time in the country either. You will be free to come and go as you please.
How do I get citizenship through naturalization?
Naturalization is the name of the process to become a U.S. citizen. If you are married to a U.S. citizen, you can apply after three years as a permanent resident. Otherwise, you need to wait five years. In either case, you must have resided in the country for the last 30 months.
You will need to take two tests: a citizenship test and an English language test. The English exam tests your ability to read, write and speak. If you struggle with any of these, it may pay to take classes first.
You may have heard stories about how difficult the citizenship test is, yet it is achievable if you study. To pass the citizenship test, you need to get right six of the 10 questions you are asked. The 10 questions will be allocated randomly from 100 possible questions that you can find online.
Seek legal help to find out more about becoming a U.S. citizen. As with all immigration procedures, it is never as simple as it looks.