In the United States, every person being brought before a court on charges has the right to legal help. From the moment that you are arrested onward, you do not have to speak to any officials without the presence of a lawyer. You also have the right to choose a lawyer that you can afford and want to employee. It is your right to be completely in control of this process.
This also means that you are allowed to hire additional legal assistance to make sure that your lawyer is prepared for the case. This can mean hiring services from companies like NLPA who can do the extra research that a busy lawyer may not necessarily have time for. Having this extra boost can really add a lot to your case and help your lawyer to prove your innocence.