| 1 | WASHINGTON (AP) - Hillary Rodham Clinton told a cheering crowd at her largest rally so far that "the endless flow of secret, unaccountable money" must be stopped. |
| 2 | Two weeks later, the main super PAC backing her bid for the Democratic presidential nomination accepted a $1 million contribution that cannot be traced. |
| 3 | The seven-figure donation - made June 29 to the pro-Clinton Priorities USA Action - came from another super political action committee. |
| 4 | Its sole donors are nonprofits that are not legally required to reveal information about their contributors. |
| 5 | Such contributions are sometimes called "dark money" by advocates for stricter campaign finance rules. |
| 6 | One group has called on the Clinton super PAC to return the money. |
| 7 | But a spokesman says it is "playing by the rules." |