U.S. legislation proposing environmental-impact tariffs on imports could violate free trade accords and embroil Washington and its trading partners in serious disputes.

Warren Buffett’s divestment from PetroChina prompted victory cries from Darfur activists, but longer-term concerns seem a more likely explanation for the sale.

Shortages of skilled labor in Canada’s oil sector are causing wages to rise and could cause global ripples in the industry.

A summit of like-minded North American leaders in Quebec addressed trade, immigration, and security issues.

Casualties among Canadian forces in Afghanistan are up, resulting in growing anti-war attitudes north of the border.

The arrest of seventeen people in Canada who allegedly comprise an Islamic terrorist cell raises new questions about homegrown extremism in North America. While Canadians wrestle with their own vulnerability, the arrests prompted U.S. officials to reexamine security on their oft-ignored northern border.

Max Boot discusses David Hackett Fischer's latest work, Champlain's Dream.

Canadian prime minister Stephen Harper discusses trade and the economy, current and future energy issues, and security concerns.

Lawrence Cannon, Canadian minister of foreign affairs, examines how the new economic goals set forth by President Obama can be realized in Canada and how both countries continue to work together in addressing issues abroad and trans-nationally.

Canada has a comparatively open immigration policy designed to attract a group of diverse, educated professionals. But recent arrests linked to a terror cell have raised questions about integration of Muslims and lax policy.

The Canadian oil sands present an important challenge to policymakers: they promise energy security benefits but present climate change problems. Michael A. Levi assesses the energy security and climate change effects of the oil sands and makes recommendations for U.S. policymakers within the context of broader bilateral relations with Canada.

The upcoming G8 and G20 conferences mark a shift to a "multipolar age," particularly if the G20 is able to agree on a continuing path to a stable global recovery, says CFR's Stewart Patrick.

Canada's military is managing its role in Afghanistan against new security concerns in the Arctic, and is looking to increase its capacity in an age when other NATO countries are cutting back on spending, says Canadian Rear Admiral David Gardam.

The Keystone XL pipeline could bolster U.S.-Canadian ties, but uproar over oil sands has become a source of friction.

Juliet Eilperin and Steven Mufson present the complex debate surrounding construction of the Keystone pipeline between Canada and the United States.

U.S. Secretary of the Treasury Timothy Geithner and Director of the National Economic Council Lawrence Summers take a look at the Obama administration's agenda for the G-20 Summit in Toronto on June 26 and 27.

Kathryn Blaze Carlson examines the issues topping the agendas of the 2010 G8 and G20 summits taking place in Canada June 25-27.

Correspondent Kira Kay reports on a Canadian hunt for "rare earth" minerals, elements mined almost exclusively in China, that are key to emerging green technologies, cell phones, engines and other high-tech devices despite their short supply.