The penny-pinching billionaire 'behind biggest ever US tax scam': Prosecutors say Robert Brockman, 79, is faking dementia to avoid trial - as it's revealed he stayed in budget hotels and ate frozen dinners despite being worth $7 billion Robert Brockman, 79, was charged last year with hiding about $2 billion in income from the IRS in a web of offshore entities over a span of 20 years Brockman has pleaded not guilty to 39 counts of tax evasion, wire fraud and money laundering He has argued in court documents that he can no longer stand trial because he has dementia Prosecutors, however, believe Brockman - the chief executive of Ohio-based Reynolds and Reynolds Co - may potentially be faking his mental decline