One's immigration status should have no bearing in a labor/employment lawsuit. If defendants try to get information about your status through you, you can ask your attorney to try to get you a protective order precluding discovery of your immigration status and authorization to work in the United States. An employer's interest in your immigration status will generally be outweighed by public interest in allowing employees to enforce their workplace rights. Any defendant who tries to bring up...
When the two sexually active individuals involved are so close in age, as is the case here (ages 19 and 16), the elements of certain offenses might not necessarily be met. For example, I do not believe that the facts given alone would be considered statutory rape in the first degree, second degree, or third degree because of the closeness in age. I would highly suggest consulting a criminal defense attorney though as that is their area of expertise. See the following link for further general...
With the limited facts presented, it seems as though there may be a breach of contract issue. Speak directly with a labor/employment attorney or contracts attorney in your area.
I hope that this helps. I wish you the best.
Considering only the facts that you presented, it does not seem that you have an actionable claim. That said, there may be facts which you did not include which might change the picture dramatically. Your options, as I see it, are as follows:
1) Speak with a local employment attorney who might take your case on a contingency basis;
2) Speak with/file a charge form with the EEOC on your own; or
3) Do nothing and let it go.
Hope this helps. Good luck!