Your Daily Politics Video Blog: Saturday will be the third anniversary of Hurricane Katrina's initial formation over the Bahamas. When she washed over Mississippi and Louisiana six days later, on Aug. 29, 2005, she breached critical levees that were supposed to protect New Orleans. Hundreds drowned. At Netroots Nation in Austin TPMtv talked to author John Barry, a New Orleans resident who now serves on the Levee Board, about the current situation in New Orleans three years on and the reasons the rest of the country bears some responsibility for New Orleans becoming so vulnerable to storms.