separate, that it's independent is an absurdity. this is why disclosure is so important. the record is built. people can follow the money. at least super pacs are required to disclose the names of the donors so we know where that money is coming from. sheila is executive director of a nonpartisan research organization that tracks. the money unleashed by citizens united has flowed into nonprofit social welfare groups that are not required to make their donors's public. planned parenthood or the nra has a social welfare purpose. they're not organized primarily to influence politics, but they're allowed some political activity. >> there has been a huge spike in politically active social welfare group.