Aerolíneas Argentinas (AR, Buenos Aires Jorge Newbery) has joined the likes of American Airlines (AA, Dallas/Fort Worth), Air Canada (AC, Montréal Trudeau), United Airlines (UA, Chicago O'Hare), Copa Airlines (CM, Panamá City Tocumen International), Air Europa (UX, Palma de Mallorca) and Delta Air Lines (DL, Atlanta Hartsfield Jackson) in suspending the sale of tickets in Venezuela over unpaid ticket-sales revenue. Pressure on Caracas has mounted in recent days after the country's Vice President of Economic Affairs, Rafael Ramirez, announced that airlines would be forced to use a secondary exchange rate determined by weekly auctions. The rate set at the latest auction was 11.36 bolivars per dollar, compared with the official rate of 6.3. The move would effectively wipe out half the estimated USD3billion in remittances owed foreign carriers leading some, such as TAME Ecuador (Quito International), to suspend their flights to Caracas Simón Bolivar in protest.