I agree. It would take an awfully large database operation to keep track of every misdemeanor conviction in the United States. I believe the FBI tries to keep track of every felony conviction, but I have no idea about the quality of their records. I'd be impressed if they could keep track of 90% of the felonies [with names spelled correctly, accurate birthdates, legible fingerprints, etc.].
Does anyone know for sure about this? Does the NCIC include misdemeanors or only felonies?