Wall Street set for flat open amid global economic uncertainty

6:26 AM ET Mon, 25 March 2019

Investors are growing concerned over the outlook for the global economy, even though U.S. futures initially rallied Sunday after Attorney General William Barr said special counsel Robert Mueller's long-awaited investigation did not find enough evidence that President Donald Trump 's 2016 campaign colluded with Russia. CNBC's Frank Holland reports.