News Wrap: Slowing iPhone sales in China drive market plunge

In our news wrap Thursday, Apple's announcement of slowing iPhone sales in China caused a meltdown on Wall Street. The Dow Jones dropped more than 600 points and the NASDAQ lost 200 amid concerns over trade tensions and a potential economic slowdown. Also, the State Department is urging caution for Americans traveling in China, as authorities there have barred some people from leaving the country.