TaxWatch: Tax cheats cost the U.S. more than previously thought — and Bitcoin is part of the problem, IRS commissioner says No Comments Uncategorized ‘We do get out-gunned,’ IRS commissioner Charles Rettig said at a Senate Finance Committee hearing. ‘We do get out-gunned,’ IRS commissioner Charles Rettig said at a Senate Finance Committee hearing. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)