US President Donald Trump waged war with "Israel" in Iran, promising "regime change" and no Iranian nuclear weapons, but the consequences were felt at home. Watch: The closing of the Strait of Hormuz has caused energy prices to skyrocket, added to the cost of living pressures of Americans and fueled frustration with the Trump administration. That anger turned into a political liability in the US midterm elections, when Democrats flipped key seats in the Senate and took control of both houses of Congress. While Trump sought "regime change" in Tehran, his war changed the political balance in the United States.