The Dow Jones industrial average slipped 14 points, or 0.1 per cent, to 18,101 as of 9:35 a.m. Tuesday
The Standard & Poor's 500 index eased two points, or 0.1 per cent, to 2,101.
The Nasdaq composite fell three points, or 0.1 per cent, to 5,007. The index is 40 points from its all-time high hit during the dot-com bubble in 2000.
Shares of Freeport-McMoRan fell 3 per cent after the company said it will cut its quarterly dividend payment.
Crude oil fell 7 cents to $46.38 a barrel in New York.
Bond prices rose. The yield on the benchmark 10-year Treasury note crept down to 1.90 per cent, from 1.91 per cent.