What the US and Canada Share: Border, Trade, NAFTA/USMCA & Environment

The US-Canada relationship is defined by deep integration:

• Longest International Border – 8,891 km (5,525 miles) across 13 US states and 2 Canadian provinces.
• Largest Trading Partners – $676B goods trade (2018); ~1/3 of Canada's trade, ~1/4 of US trade.
• Free Trade Agreement – NAFTA (1994), now USMCA, eliminates most tariffs among US, Canada, Mexico.
• Environmental & Climate Cooperation – Great Lakes Water Quality Agreement, Canada-US Environmental Agreement, Paris Agreement collaboration.

These ties reflect shared geography, values, and economic interdependence.