I'll give you plenty of evidence. On July 8, Bush held a press conference and issued inane and banal defenses of his actions while an officer of Harken energies.
At one point, after already claiming he didn't "know completely" why in the world he filed a notice of intent to sell 8 months after the fact, he had the audacity to claim that "in the corporate world" accounting practices are not always "black and white."
This was hillarious enough that it caused an eruption of laughter from the press corps covering the event. Bush's defiant stare at those who dared laugh was rival to some of Hillary's best efforts in that regard.