COPPER BLUES: Weak manufacturing data from the U.S. and China combined with a stronger dollar to push copper down nearly 7 cents to $4.41 a pound. The news prompted questions about future demand for the industrial metal.

MANUFACTURING WOES: The manufacturing slowdown offset news about a compromise plan to raise the nation's borrowing limit ahead of Tuesday's deadline. Most commodities were lower on the day.

DOLLAR'S IMPACT: The dollar also rose. Since commodities are priced in dollars, a stronger dollar makes them more expensive for buyers using other currencies.