How the 'Wolves of K Street' took over Washington, D.C.

A book released this year makes the case that corporate interests have always had a friend in the White House, regardless of who has been in power.

Here & Now's David Folkenflik talks with Brody Mullins, co-author of the book "The Wolves of K Street: The Secret History of How Big Money Took Over Big Government," about how the modern lobbying industry developed.