* BofA, Goldman Sachs slip after quarterly results
* Harley-Davidson falls after cutting shipments forecast
* Netflix jumps on robust subscriber growth
* Indexes down: Dow 0.29 pct, S&P 0.23 pct, Nasdaq 0.26 pct (Updates to open)
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, following a setback to the healthcare bill.
Shares of Bank of America slipped 0.8 percent, while Goldman Sachs was down 0.9 percent after reporting quarterly results.
Last week, shares of JPMorgan, Wells Fargo and Citigroup had taken a beating after their quarterly results and forecasts failed to excite investors.
Harley-Davidson slumped 9.6 percent after the motorcycle maker cut its 2017 shipments forecast.
The healthcare sector will be under scrutiny after the Republican healthcare bill to replace Obamacare sank in the Senate, with news that two Republican senators would not support the latest version of the bill.
The healthcare bill failure spelled uncertainty for President Donald Trump's agenda of tax reform and an infrastructure overhaul, leaving the president without any major legislative accomplishments six months into his tenure.
News on the healthcare bill sent the U.S. dollar to a 10-month low against a basket of major currencies.
"Investor sentiment is pessimistic this morning," said Naeem Aslam, chief market analyst at Think Markets UK.
"The fiasco of the healthcare bill means that the tax reforms or the so called infrastructure spending plan are in jeopardy."
UnitedHealth Group fell 0.2 percent, while Johnson and Johnson fell 0.4 percent.
At 9:34 a.m. ET (1334 GMT), the Dow Jones Industrial Average was down 61.69 points, or 0.29 percent, at 21,568.03, the S&P 500 was down 5.71 points, or 0.23 percent, at 2,453.43.
The Nasdaq Composite was down 16.48 points, or 0.26 percent, at 6,297.95.
Eight of the 11 major S&P 500 sectors were lower, with the healthcare index's 0.50 percent fall leading the decliners.
As the earnings season gets under way, the market will be keeping a close eye on corporate results to see if the high valuations are justified in the face of mixed economic data, tepid inflation and policy gridlock in Washington.
Analysts' are estimating an 8.2 percent rise in second-quarter earnings for the S&P 500 companies from a year earlier.
This follows a robust first quarter when U.S. companies posted their best earnings since 2011, according to Thomson Reuters I/B/E/S.
IBM, United Continental Holdings, CSX and Navient are among the companies scheduled to report results after the bell.
Netflix jumped 8.8 percent after the streaming-television pioneer's added more subscribers than expected in the second quarter.
Declining issues outnumbered advancers on the NYSE by 1,552 to 899. On the Nasdaq, 1,596 issues fell and 631 advanced. (Reporting by Tanya Agrawal; Editing by Arun Koyyur)