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GOP Hawks Battle Isolationists as Trump Considers Military Options Against Iran

Lawmakers have introduced War Powers resolutions to limit the president’s unilateral military authority following GOP divisions over intervention

Rep. Marjorie Taylor Greene, R-Ga., speaks before Republican presidential nominee former President Donald Trump at a campaign event at the Cobb Energy Performing Arts Centre, Tuesday, Oct. 15, 2024, in Atlanta.
U.S. President Donald Trump leaves after a family photo session during the G7 Summit, in Kananaskis, Alberta, Monday, June 16, 2025. (Suzanne Plunkett/Pool Photo via AP)
Senate Budget Committee Chairman Lindsey Graham, R-S.C., looks out from the chamber as Republican senators meet to find a way to help President Donald Trump cancel $9.4 billion in spending already approved by Congress, at the Capitol in Washington, Wednesday, June 11, 2025.
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Overview

  • Israel’s recent airstrikes on Iranian military and nuclear sites have killed more than 220 people and escalated the Middle East conflict
  • Sen. Lindsey Graham told President Trump that the diplomatic window has closed and urged him to authorize US strikes to thwart Iran’s nuclear program
  • Rep. Marjorie Taylor Greene, joined by isolationist Republicans including Rep. Thomas Massie and Sen. Rand Paul, pressured the president to maintain an America First stance and avoid new foreign wars
  • Trump has been consulting both hawkish and noninterventionist allies, revealing a split within his inner circle over the merits of US engagement in the conflict
  • Sen. Tim Kaine and Rep. Thomas Massie introduced War Powers resolutions in the Senate and House to curtail the president’s ability to launch military action without congressional approval