What can I do to prevent him from becoming a citizen?

To answer your question, there is not a lot that you can do to prevent him from getting citizenship as long as he meets the requirements.

Do I need a lawyer, or can I just admit guilt?

You may or may not qualify for for a deviation. An attorney would help negotiate that.

Will it be best to get an attorney to look at the case and go with him just because of the nature of the case?

I second every other attorney here, You never willingly go to the police station. Typically when they are asking you to come to them it means they...

Immigration status is not a prerequisite to being part owner of a business.

What can I do from a legal stand point as the main witnesse for my boyfriend?

Your boyfriends best course of action would be to consult with an attorney. Sounds like he would have a valid defense to charges for assault but...

What do I do? Do I go meet with him without representation. I am really scared as I do not want to go to jail for something..

All the phrases you mentioned he used on you such as "your name has come up", "just need to get your side of the story" are common phrases law...

2nd chance for marijuana possession? Can I still get on a diversion program?

You should have a criminal defense attorney review your prior charge and outcome in order to better assess what might happen with this particular...

Is it legal for police to lie?

Police are certainly allowed to lie to you. However, you shouldn't rely on police officers for legal advice on trespassing and assault. These are...