A group of Canadian premiers and U.S. governors is calling for an end to the COVID-19 vaccine mandate for cross-border truck drivers.

The government leaders, made up of two Canadian premiers and 16 governors from the United States, penned a letter to Canadian Prime Minister Justin Trudeau and U.S. President Joe Biden requesting they reinstate vaccine and quarantine exemptions, citing “negative impacts on the North American supply chain, the cost of living, and access to essential products for people of both countries.”