Moderna climbs on deal to develop mRNA medicines in ChinaChip stocks slide on China's export curbsU.S. May factory orders miss expectationsFed minutes awaited at 2:00 p.m. ETIndexes down: Dow 0.16%, S&P 0.05%, Nasdaq 0.07%July 5 (Reuters) - Wall Street's main indexes fell on Wednesday ahead of the Federal Reserve's June meeting minutes, while weak U.S. and China economic data as well as rising Sino-U.S. tensions dented investor sentiment.May U.S. factory orders rose less than expected, according to a Commerce Department report, fanning fears of a slowdown due to high interest...