Dr. Ben Carson has discovered over $500 billion (that's with a 'B') in errors and accounting mistakes during his audit of the Obama administration’s Housing and Urban Development budget. One of Dr. Carson’s first orders after being confirmed as the Secretary of HUD was a thorough audit of the agency, which has been accused of fraud and over-budgeted projects throughout the entire Obama administration. What did the auditors find? Over $520 billion in budgetary mistakes and clerical errors.