should i apply for citizen ship if i have simple assault cases for fighting with my brother but are 4 years apart.

Hello, The U.S.CIS will look at any criminal convictions over the past 5 years before you applied for citizenship when deciding whether to grant you citizenship. It is not a good idea to file for citizenship if a person has criminal convictions within the preceding 5 year period particularly if they are still on probation as the application may be denied.  Also, since your question does not indicate when you first obtained your green card or the sentences you received, it is important for you to consult with an immigration attorney and provide them with the specific information regarding your criminal convictions. That way you can be certain that whenever you do apply for citizenship, you would have reviewed your application and history to make sure that you do not end up with a different problem because some criminal convictions may render you deportable. Notes: This information is of a general nature and is not, nor is it intended to be, legal advice. You should consult an attorney for advice regarding your individual situation.