American's views on the economy turned more negative in the third quarter with deepening concerns about jobs, inflation and the outlook, according to the CNBC All-America Economic Survey.Together with blame for the shutdown aimed at the president and congressional Republicans, those views dragged down President Donald Trump's net approval rating on the economy to 42% approving and 55% disapproving.The -13 net approval on the economy is the lowest of any CNBC survey during either of Trump's two terms.The pre ...