Yellen - who kept the cheap-money printing presses running for Obama, to make it cheaper for Obama to run up the debt, which in future years, at higher interests rates will be taking larger chunks of the budget - has no standing to lecture anyone about that debt.
She was deaf, dumb and blind as the head of the S.F. Federal Reserve bank in all the years the housing bubble and it’s related risky mortgage bubble was building, and in denial it was a crisis right up to the point it all fell apart. She was kept on and elevated to the top for one reason - finance Obama’s debt explosion.