Office of Trade and Economic Analysis 
http://www.trade.gov/mas/ian/
Click on U.S. Foreign Trade Highlights (left column)
For Totals: Click on U.S. Aggregate Foreign Trade Data

  • Goods and Services (Tables 1-5)
  • Export/Import Data (Tables 6-8)
  • Trade Partners (Tables 9-13, 21-22)
  • Trade to Individual Countries (Tables 14-20)
  • SIC & SICT Code (Tables 23-32)
  • 2 Digit HS# (Tables 33-35)
  • NAICS Code (Tables 38-46)

Trade Data Online
http://www.ic.gc.ca/eic/site/tdo-dcd.nsf/eng/Home
Search by Product or by Industry
Scroll down to U.S. Trade statistics.