Wall Street set for lower open as trade war concerns weigh on markets

6:40 AM ET Thu, 31 Oct 2019

U.S. stock index futures turned lower on Thursday morning following a report, which cited unnamed sources, that Chinese officials have been casting doubt over the possibility of a long-term trade deal with the U.S., despite the two sides closing in on an initial "phase one" accord. CNBC's Contessa Brewer reports.