You are an illegal immigrant. You may also be referred to as "undocumented," or "without papers." You could keep running and staying ahead of the police, but that is no way to live. All you would have to do is enter an immigration law firm and ask for help. If you do not know where to find such a law firm, here are a few places to start.
At the Borders
Whether you are coming from another country via Canada or Mexico, or you are actually from Canada or Mexico, it is certain that immigration lawyers have their firms just over the borders. While it might be risky to get close to the border again, it is a risk worth taking if you want to find a lawyer/ law firm to represent you. You could have a U.S. citizen locate a lawyer not quite so close to the border, and then ask that same person to drive you there. That is less risky than if you drive a vehicle or you are on foot and heading toward a border!
In Really Big Cities
Immigration lawyers often have their law firm offices in really big cities. One such city is New York City. This was originally the main port of entry for immigrants coming by boat, so immigration lawyers set up their practices to help the immigrants that were arriving. Really big coastal cities are the best places to find immigration lawyers, although you can find the lawyers in many other cities and states.
Consulates and Embassies
Consulates and embassies are safe places for immigrants to go. There is an embassy in every country in the world right here on American soil. If you can get to your country's embassy, you will be safe. The embassy can help you find an immigration lawyer who can help. The embassy will protect you from deportation until you have met with an American immigration lawyer. Consulates are similar. Both embassies and consulates are found in several different states, as well as the nation's capital, Washington, D.C.
If you enter a courthouse seeking an immigration lawyer, one of two things will happen. Either you will find a lawyer that practices immigration law, or you will find a lawyer that knows where you can find an immigration attorney. Either way, you will find what you are looking for. (Just be really careful, as courthouses are state and federal property, and you are not a legal citizen.)