Officials take latest step against Veolia North America and International Boundary and Water Commission in ongoing dispute over county pollution impacts from untreated Mexico flows, but firm denies responsibility.

While improvements to the South Bay International Wastewater Treatment Plant in San Diego have begun, local officials stress more money will be needed to stop the raw sewage overflow problem in the cross-border area.

Rick Snyder invoked his Fifth Amendment right June 30, declining to answer questions.