"WALKER, LA - The frustrated mayor of Walker, Louisiana said Tuesday that the flooding event in his city was "man-made" and announced plans to file suit against the state of Louisiana and federal government. Walker Mayor Rick Ramsey said a six-foot tall concrete barrier that was put along I-12 when the interstate was expanded last year essentially put the city of Walker "into a bowl" because he said the barrier prevents water from draining out of Walker. "When the Amite River went up, it hit that wall," Ramsey said. "We have video evidence that shows the concrete barrier and...