First, you should not be talking to anyone other than your attorney. Posting details here is "talking to someone". You have the right not to incriminate yourself and want to make sure that nothing you say above will help prove the case against you. I suggest you show this post to your attorney as soon as possible.
But to answer your Federal Question, you are probably looking at a 1028 or a 1028A violation, which deals with Identity Theft and Aggravated Identity Theft. There is also an issue of possible wire fraud connected with the use of the Credit Card. Generally speaking, the Federal Statute of Limitations on Federal Crime is five years.... However, you need to check with your attorney to determine the correct limitation.