Who is Denis McDonough, the man poised to be the next Chief of Staff?
05:12Politico Playbook: Who is Denis McDonough, the man poised to become President Obama's next Chief of Staff? Politico's Jim VandeHei joins Morning Joe to discuss.
Politico Playbook: Who is Denis McDonough, the man poised to become President Obama's next Chief of Staff? Politico's Jim VandeHei joins Morning Joe to discuss.
