Can I be held accountable for the incorrect mileage on a car's title after trading it in?

Question Details: I traded in my vehicle at a local car dealership. The title I gave them, at the time of the transfer said the vehicle was at an actual 100,000 but the Power of Attorney I signed had an odometer disclosure of 50,000 actual miles. The descrepency between the title and car's milage happened because when I completed the title work for my car, I didn't have it with me, so I just guessed the mileage. Now, 3 months later, they are telling me I need to come in and sign a new power of attorney, stating that the actual mileage of the vehicle is not 50,000. And that since I registered the title with an actual mileage of 100,000 I committed a federal offense. Important Notice