Republican Representative Nancy Mace has called for Congress to have a formal vote before any decision to deploy US troops to Iran, highlighting growing divisions within President Donald Trump’s party. Her remarks on Sunday followed a classified House briefing on the ongoing war, which she said raised concerns about the administration’s plans. The comments coincided with a Washington Post report that the Pentagon is preparing for limited ground operations in Iran, including potential raids on Kharg Island and near the Strait of Hormuz.

Mace told CNN that any conventional ground operation involving Marines or the 82nd Airborne Division would constitute a ground war requiring congressional authorization. She emphasized that “we don’t want troops on the ground” and urged the administration to seek proper authority if such action is pursued. The White House did not deny the Pentagon’s preparations but said they were part of routine planning to provide the president with options.

The debate comes as the US expands its military presence in the Middle East, with thousands of additional troops arriving. Some Republican lawmakers and Trump allies, including Matt Gaetz, have warned that a ground invasion could lead to higher costs and prolonged conflict.