The Clinton Foundation is operating a $20 million private equity firm in Colombia, raising concerns from government and consumer watchdog groups who say the practice is unusual and could pose a significant conflict of interest. The Bogota-based company, Fondo Acceso, could also lead to uncomfortable questions for Hillary Clinton as she criticizes the private equity industry on the campaign trail. Fondo Acceso was founded by Bill Clinton, Mexican billionaire Carlos Slim, and mining magnate Frank Giustra in 2010, financed with a $20 million joint contribution from the Clinton Foundation's Clinton-Giustra Sustainable Growth Initiative and the SLIM Foundation. According to the...