This issue has driven a wedge between Boeing and Delta

Alaska Airlines isn’t Delta Air Lines Inc.’s only opponent in the Puget Sound area. Atlanta-based Delta (NYSE: DAL), which has been growing rapidly at Seattle-Tacoma International Airport in recent years and moving in on Alaska's routes, also is head-to-head with the region’s largest manufacturer: Boeing. In this case the dispute is over reauthorization of the Export-Import Bank, which is now due to lose its charter June 30 after years of near-death battles over its funding in Congress. The…