Stocks go nowhere as trade worries overshadow strong economic data

Stocks ended little changed Tuesday, after the S&P 500 touched 2,900 for first time, holding close to record highs for a third straight session. The dollar slipped, and Treasury yields inched higher. 
Here's the scoreboard:
Dow Jones industrial average: 26,060.62 +10.98 (+0.042%)S&P 500: 2,897.60 +0.86 (-0.024%)
Nasdaq Composite: 8,030.04 +12.14 (+0.15%)
After agreeing to resolve key NAFTA disputes with Mexico, the US restarted high-level talks wi