Billionaire David Rubenstein on wealth tax, philanthropy and what we can learn from history

Only on the "CBS This Morning" podcast, co-host Tony Dokoupil talks with David Rubenstein, co-founder and co-executive chairman of the Carlyle Group, a private equity company with $222 billion of assets under management. Rubenstein discusses whether he would support a wealth tax on the top 10 percent of Americans to help give the government the resources it needs. As a well-known philanthropist, Rubenstein also explains why he has signed the giving pledge, in which he's promised to give away all of his wealth. He also shares his take on the economy, ways to improve the country and lessons from history.