The letter was sent Wednesday morning.

„We are writing to request that you immediately reinstate the vaccine and quarantine exemptions available to cross-border truck drivers. We understand the vital importance of vaccines in the fight against COVID-19 and continue to encourage eligible individuals to get vaccinated,“ it said.

The letter was signed by 16 U.S. Republican governors, some from border states like Montana, North Dakota and Alaska, some from southern states like Mississippi, Georgia and Alabama.

Alberta Premier Jason Kenney and Saskatchewan Premier Scott Moe, joined by 16 American governors, have written to President Joe Biden and Prime Minister Justin Trudeau demanding the end of vaccination mandates for cross-border truckers.