The White House is pushing to ease the way for companies to complete deals with Iran, aiming to cement the landmark nuclear agreement reached last year and make it difficult for future administrations to undo it, senior U.S. officials said. The effort, which borrows from President Barack Obama’s playbook for solidifying U.S. relations with Cuba, got a boost this week when Boeing Co. reached a $17.6-billion deal with Iran to sell commercial jets to the country’s main airline. A Boeing spokesman declined to comment on any specific effort by the administration. In a letter Thursday responding to criticism of the deal from two Republican lawmakers, the company’s senior vice president for government operations, Tim Keating, said the administration had made it clear in consultations with Boeing that “the ability to provide Iranian airlines with […]