Corporations, unions and individuals can give unlimited donations to outside groups to support political activities, forming so-called super PACs. But critics fear that these super PACs have undue influence over elections. Now, with the White House embracing pro-Obama super PACs, we discuss how big money is influencing the 2012 presidential campaign.
Tracking Super PACs
Sheila Krumholz, executive director of the Center for Responsive Politics and OpenSecrets.org, which tracks federal campaign contributions and lobbying activity
Shirish V. Date, editor and journalist for NPR
Dan Schnur, director of the Jesse M. Unruh Institute of Politics at the University of Southern California