Federal Minor in possession of alcohol offense.

Although I do not practice law in the state of Ohio, here are my initial impressions.  You should be that, in many states, pleading guilty to minor in possession of alcohol results in unanticipated consequences, including but not limited to suspension of your driving privileges.  Therefore, you should not simply just plead guilty without first consulting with and/or retaining a local attorney who is familiar with these matters.  There may very well be alternative ways to resolve this matter, including but not limited to participation in a diversionary program, making a charitable contribution, and/or performing community service.  Moreover, your attorney may identify an independent way to resolve the charge (i.e., get it thrown out).  Thus, you should consult with and/or retain a criminal defense attorney in your area in the interest of obtaining the most favorable resolution possible.

Your question raises other questions.  What court were you charged / convicted in?

Generaly, in Ohio, one may apply to have the record sealed of their first offense, one year after final discharge in the case of a misdemeanor. (RC sec 2953.32).  The prosecution has an opportunity to respond and an investigation by BCI will be conducted before the court renders its decision.