Each month or so, members of Crowell & Moring's state tax team sit down with a different state's top revenue official(s) for a candid conversation regarding current tax issues and career highlights. The series has a comprehensive nationwide scope. For this column, the fifth in the series, Don Griswold, Walt Nagel, and Jeremy Abrams (members of Crowell's state tax team) spoke with Barbara Brohl, Executive Director of the Colorado Department of Revenue, and John Vecchiarelli, its Senior Director of Taxation.