The union representing 9,000 Canada Border Services Agency workers says some job actions began Friday as bargaining with the government continued. “Our bargaining team representing CBSA employees has been in mediation with CBSA and Treasury all night and through to this morning, and we’re giving them a bit more time to negotiate at the table,” the Public Service Alliance of Canada and its Customs and Immigration Union said in a Friday morning statement. “In the meantime, work-to-rule actions are underway at border crossings and airports across the country.” It didn’t immediately specify what that entails. The union said it had been bargaining with the government since 2018 and it served a strike notice on Tuesday. The dispute comes as Canada is preparing to allow fully vaccinated Americans to visit without having to quarantine starting Aug. 9. Borders will open to travellers from other countries with the required doses of a …