The Democratic National Committee claims it has banned contributions from special-interest groups and lobbyists under the leadership of Rep. Debbie Wasserman Schultz (D.-Fla.), an ethical standard she demands that Republicans now follow. “The refusal to accept donations from federal lobbyists and PACs [political action committees] is critical to limiting the influence of special interests in the political process,” Wasserman Schultz says. But Democrats aren’t eager to follow the edict. And neither is Chairwoman Wasserman Schultz. Under her leadership, the Democratic National Committee (DNC) was recently forced to return thousands of dollars from a dozen lobbyists after the Center for Responsive...