Wall Street opens mixed ahead of Senate tax reform vote

US stock indices opened the last session of the week mixed after a basket of data from the US, the world's largest economy, while markets await the Senate's vote on the tax reform bill supported by President Donald Trump, amid concerns about its impact on the federal deficit.

Earlier US data showed the ISM Manufacturing PMI down to 58.4 in November from 58.7 in October, while ISM Manufacturing Prices fell as well to 67.0 from 68.5, as construction spending accelerated to 0.5% from 0.3% in September. 

Federal Reserve Bank of Dallas President Robert Kaplan participated in a panel discussion at the Border Economic Development and Entrepreneurship Symposium, in Texas, while Federal Reserve Bank of Philadelphia President Patrick Harker spoke about approaches to economic growth at a policy forum hosted by the Federal Reserve Bank of Philadelphia.

Political concerns mounted amid accusation by the FBI against former Trump national security adviser Philip Flen of perjury, and expectations of easy conviction. 

As of 04:48 GMT, Standard and Poor's 500 rose 0.06%, or 1.62 points to 2,648.95, while Dow Jones added 0.17%, or 41.20 points to 24,313.55. 

Tech-heavy NASDAQ slipped 0.15%, or 10.62 points to 6,863.36.