NEW : An attorney says he found ` ` nothing nefarious '' about the fundraising brothers . Mexico : The fundraisers ' leader is a Mexican casino magnate . A Justice Department cable reports connections with organized crime . Carlos Rojas Cardona and Alberto Rojas Cardona began raising money for the Obama campaign and the Democratic National Committee in Chicago last fall , according to the newspaper . Pepe Rojas is arrested on a warrant in Iowa after his probation was revoked .
NEW : An attorney says he found ` ` nothing nefarious '' about the fundraising brothers . Mexico : The fundraisers ' leader is a Mexican casino magnate . A Justice Department cable reports connections with organized crime . Pepe Rojas is arrested on a warrant in Iowa after his probation was revoked .