As of April 1 of this year, the BSA has hired a company whose name I forget ("Check" something, I think) to run a nationwide check on every leader who files a Adult Application. That includes currently registered leaders who are switching to a new position (e.g., from Webelos Den Leader to Assistant Scoutmaster). If you show up with a conviction anywhere in the U.S., there should be a hit, and then it depends on what your conviction was for.
RonF, you are to be commended for your service to the Scouts, thanks. In retirement now, and on the road, my main support will likely be financial. (Past Eagle, past Asst SM and father of an Eagle.)