The Dow Jones Industrial Average declined 87.69 points or 0.34 per cent to 25 645.91. The S&P 500 was down 3.77 points or 0.13 per cent to 2 858.05 Xinhua news agency reported.
The Nasdaq Composite Index erased 2.65 points or 0.03 per cent to 7 886.45.
Fed officials saw an escalation in international trade disputes as a potentially "consequential downside risk" for the US economy according to the minutes released on Wednesday.
"Participants observed that if a large-scale and prolonged dispute over trade policies developed there would likely be adverse effects on business sentiment investment spending and employment " said the minutes of the Fed s July 31-August 1 meeting.
While many Fed officials signalled that the central bank was ready to raise interest rates as soon as next month some worried that current trade disputes could force the central bank to rethink its interest rate hike plans.
Meanwhile US weekly jobless claims slipped by 2 000 to 210 000 last week despite the ongoing trade worries the Labor Department said on Thursday. The four-week moving average was 213 750 a decrease of 1 750 from the previous week s unrevised average.
--IANS pgh/