Julie Bycowicz for 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. Two weeks later, the main super PAC backing her bid for the Democratic presidential nomination accepted a $1 million contribution that cannot be traced.

The seven-figure donation, made June 29 to the pro-Clinton Priorities USA Action, came from another super political action committee, called Fair Share Action. Its two lone contributors are Fair Share Inc. and Environment America Inc., according to records filed with Federal Election Commission.