Sixteen governors and two Canadian premiers on Wednesday urged President Joe Biden and Canadian Prime Minister Justin Trudeau to reinstate COVID-19 vaccination exemptions for cross-border truckers. Failing to reinstate the exemptions will worsen the supply chain pain, the governors and premiers said in a letter. “We are deeply concerned that terminating these exemptions has had demonstrably negative impacts on the North American supply chain, the cost of living, and access to essential products for people in both of our countries,” they wrote. The leaders also criticized Biden and Trudeau for terminating the exemptions at a bad time. “The timing of your decision to terminate the vaccine and quarantine exemptions could not have been worse, as North America already faces grave supply chain constraints,” read the letter. Alberta Premier Jason Kenney, Saskatchewan Premier Scott Moe, and 16 Republican governors signed the letter. The U.S. governors who joined the petition include those …