
Canada’s intelligence partnership with the United States remains firmly intact, even as political rhetoric and trade disputes strain relations between the two countries, a senior official from the Canadian Security Intelligence Service (CSIS) told lawmakers this week.
Appearing before the House of Commons foreign affairs committee, CSIS Assistant Director Paul Lynd emphasized that intelligence cooperation between Ottawa and Washington continues “lockstep and hand-in-hand,” regardless of tensions at the political level.
“For decades, we’ve been partners,” Lynd said during testimony related to Canada’s Arctic strategy. “Despite some unpredictable behaviour at the political level, at the intelligence department level we still work closely together and it’s in both our interests to do so.”
Lynd, who oversees CSIS’s operational and collection activities at home and abroad, was responding to questions from Conservative MP Ziad Aboultaif regarding whether collaboration with U.S. agencies has changed since President Donald Trump returned to office roughly a year ago.
According to Lynd, cooperation remains consistent, particularly within the framework of the Five Eyes intelligence alliance, which includes Canada, the United States, the United Kingdom, Australia, and New Zealand.
Conservative foreign affairs critic Michael Chong pressed further, raising concerns about rhetoric from Washington that he said threatens the sovereignty of Arctic nations, including Canada and the Kingdom of Denmark. However, Chong concluded that such political messaging has not filtered into the operational relationships between intelligence agencies.
“In other words, you’re not siloing them in terms of collaborating on Five Eyes intelligence with respect to Arctic security,” Chong said.
“That is correct,” Lynd replied, adding that CSIS continues to collaborate closely with U.S. counterparts “in the areas we’re aligned.”
Similar assurances have been offered at the ministerial level. Defence Minister David McGuinty said last November that cooperation on defence and security remains robust.
“In my six or seven months in this job, what I’ve concluded is that there is no daylight between us,” McGuinty said at the time. He noted that the two countries share intelligence, integrate supply chains, and collaborate on military equipment procurement and development.
Canada is also reviewing its planned purchase of F-35 fighter jets, though Chief of the Defence Staff Gen. Jennie Carignan has previously expressed support for acquiring additional aircraft and strengthening cooperation with Washington on missile defence initiatives.
The reaffirmation of intelligence ties comes amid a period of mounting friction between Ottawa and Washington.
Trade tensions escalated after Ontario aired an anti-tariff advertisement in the United States last October. Relations further deteriorated following public exchanges between Prime Minister Mark Carney and President Trump during speeches at the World Economic Forum in Davos, Switzerland, in January.
In his Jan. 20 address, Carney criticized what he described as the U.S. administration’s ambitions toward Greenland and urged nations not to bow to “great powers.” The following day, Trump accused Carney of ingratitude and claimed Canada “lives because of the United States.”
More recently, tensions flared over the opening of the Gordie Howe International Bridge linking Windsor, Ontario, and Detroit, Michigan. On Feb. 9, Trump announced he would block the bridge from opening unless the United States received compensation, arguing that the agreement unfairly favored Canada.
Carney responded that Canada had invested $4 billion in the project, that ownership is shared between Canada and Michigan, and that both Canadian and American steel and workers were involved in construction. He expressed confidence that the issue “will be resolved.”
Despite the sharp political exchanges and economic disputes, officials on both sides appear committed to maintaining core security cooperation.
Lynd’s testimony underscored that, at least within intelligence and defence circles, longstanding institutional relationships continue to function independently of political tensions.
As geopolitical pressures intensify in the Arctic and beyond, Canada and the United States appear determined to keep their security apparatus aligned even when their leaders are not.

