A July 20 deadline to reach a permanent deal on Iran 's nuclear program is looming . The model only captures lost export revenues and does not take into account secondary effects of sanctions such as higher oil prices to the broader U.S. economy . If a deal is reached , the U.S. will have to decide whether to lift sanctions , authors say . They say the U.S. is the most negatively impacted of the nations imposing sanctions . The report says that if Congress does not act by Sept. 30, it could lead to an economic crisis in Europe and elsewhere.
A July 20 deadline to reach a permanent deal on Iran 's nuclear program is looming . If a deal is reached , the U.S. will have to decide whether to lift sanctions , authors say . They say the U.S. is the most negatively impacted of the nations imposing sanctions . The report says that if Congress does not act by Sept. 30, it could lead to an economic crisis in Europe and elsewhere.