"Why are you even running?" — Mogul and all-around loudmouth Donald Trump to Rob Maness, the retired Air Force colonel who is running against U.S. Sen. Mary Landrieu., D-La. Maness, who has tea party support, is challenging both Landrieu and U.S. Rep. Bill Cassidy, the Republican congressman from Baton Rouge who has mainstream GOP backing. The exchange happened after Maness met Trump (who backs Cassidy) at the Republican Leadership Conference in New Orleans. It was recounted by LaPolitics Weekly, which also reported that Trump walked out on Maness.