The Canadian political landscape has recently undergone a leadership transition, with new Prime Minister Mark Carney officially taking the helm at a time when North American geopolitics are facing a major turning point. As former U.S. President Donald Trump’s influence in politics continues to expand, the Canadian government must strike a balance between maintaining the two countries' long-standing, close trade and security partnership and addressing the highly protectionist policies that Trump may implement. Upon taking office, Carney’s primary task is to manage economic interactions and national defense issues at the U.S.-Canada border, which involves not only the stability of both nations' industrial chains but also Canada’s positioning within the North American defense system.

Multiple media reports have confirmed that Prime Minister Carney has publicly expressed a willingness to cooperate with the Trump administration on economic issues, attempting to mitigate potential trade frictions through diplomatic channels. Meanwhile, the Canadian defense and historical academic communities have begun discussing extreme scenarios in U.S.-Canada relations. Experts, including Andrew Burtch, a researcher at the Canadian War Museum, have pointed out that the Canadian government’s national security strategic planning has already incorporated assessments of various contingencies in its relationship with the U.S. This dual-track strategy, ranging from economic cooperation to defense preparation, reflects the highly cautious and pragmatic attitude Canada has adopted in responding to the uncertainty of U.S. policies.

However, there are significant differences in perspectives regarding the long-term stability and policy execution of the Carney administration. Some reports indicate that although Carney has shown a willingness to cooperate with Trump, the long-term stability of his regime remains uncertain, with some even suggesting he faces difficulties regarding re-election. Furthermore, regarding the specific impact on U.S.-Canada relations, media coverage varies on the extent of discussions surrounding extreme hypotheses such as a "U.S. invasion." While some academic and historical studies view these as necessary scenario planning for defense, other analyses argue that such discussions are exaggerated and do not necessarily reflect the current diplomatic atmosphere.

What remains to be confirmed is how the Carney administration will specifically implement its economic policies, and what specific trade demands the Trump administration will place on Canada.

This regime change has profound implications for North America. First, on the economic front, as Canada is one of the United States' largest trading partners, any adjustments to U.S. tariff policies or trade barriers will directly impact Canada's export-oriented industries. Second, on the policy front, Carney must find a balance between upholding Canadian sovereignty and aligning with U.S. North American defense strategies. If there are drastic changes to U.S.-Canada border policies, it will not only affect logistics and the movement of people between the two countries but could also create structural pressure on the resilience of North American supply chains. For multinational corporations, this uncertainty has become a core variable in evaluating future investment and operational layouts.

Although there is widespread concern regarding U.S.-Canada relations, experts caution against over-interpreting the impact of any single event. Carney’s willingness to cooperate economically shows that the Canadian government still prefers to resolve differences through dialogue rather than confrontation. Furthermore, discussions regarding defense preparations are largely based on routine operations in historical research and strategic defense, rather than a sign that the relationship between the two countries is about to collapse. A limiting factor is that the Trump administration’s policy style is known for its unpredictability, which means that even if Canada develops comprehensive response plans, it may be forced to adjust due to sudden U.S. decisions. Therefore, the focus should be on whether the Carney administration can successfully establish communication channels with Trump’s core staff in the coming months.

Subsequent observations will focus on three aspects: first, whether the Carney administration can secure favorable terms for Canadian industries in upcoming bilateral trade negotiations; second, how the Canadian Department of National Defence will adjust its military budget and deployment in the face of U.S. defense policy shifts; and third, the Trump administration’s attitude toward Canadian politics and whether it will exert political pressure on the Carney administration through public rhetoric. These factors will collectively determine the stability of the North American political and economic landscape over the next four years and serve as key indicators for the international community to observe whether U.S.-Canada relations will undergo a structural shift.