PBS News Hour S44 E187 September 18, 2019

Wednesday on the NewsHour, the Fed cuts its benchmark interest rate for the second time in three months to keep the economy growing. Plus: Will attacks on Saudi oil sites prompt a U.S. military response, Calif. Gov. Gavin Newsom on President Trump's change to emissions rules, Maine lobsters suffer in warming waters, mining sand in Cambodia, teens on vaping dangers and a special retirement message.