The CANADA FIRE Act authorizes the President to impose sanctions on Canada's government in response to transboundary wildfire smoke that crosses into the United States. Within 30 days of enactment, the President must determine whether Canada experienced material wildfire smoke events during the prior 12 months and failed to take reasonable measures to prevent or mitigate them; if the President does not make this determination, it is automatically deemed affirmative. If sanctions are triggered, the President must identify Canadian officials and other responsible parties within 60 days and block their U.S. assets, while also imposing at least three mandatory sanctions on Canada's government, such as halting U.S. procurement from Canada, blocking Export-Import Bank assistance, opposing loans at international financial institutions, and potentially restricting imports, banking, or investments. The Act also authorizes visa restrictions on identified Canadian officials and calls for the State Department to consider declaring certain Canadian diplomatic personnel as "persona non grata." Sanctions can be terminated if Canada adopts an adequately funded wildfire prevention plan, establishes effective notification procedures, and prevents material smoke events for 90 consecutive days. The law includes exceptions for humanitarian aid, wildfire assistance, and diplomatic activities necessary to comply with international obligations.