July 18 (Reuters) - U.S. stocks opened lower on Tuesday, weighed down by earnings reports from some big names and concerns over President Donald Trump's ability to push through his pro-growth policies.
The Dow Jones Industrial Average fell 53.3 points, or 0.25 percent, to 21,576.42. The S&P 500 lost 4.26 points, or 0.17 percent, to 2,454.88. The Nasdaq Composite dropped 10.77 points, or 0.17 percent, to 6,303.66. (Reporting by Tanya Agrawal; Editing by Arun Koyyur)