Complex sentence: Joseph Ronald Banister is a former Special Agent of the Criminal Investigation Division of the Internal Revenue Service (IRS) who resigned from the IRS and later appeared on Sixty Minutes II challenging the conduct of the IRS concerning legal issues with taxation.
Split into simpler sentences: Joseph Ronald Banister is a former Special Agent of the Criminal Investigation Division of the Internal Revenue Service (IRS). Banister resigned from the IRS and later appeared on Sixty Minutes II challenging the conduct of the IRS concerning legal issues with taxation.