Iran war costs near $30B as House Republicans face funding fight

Republicans in Congress confronted a funding crisis in early April 2026 as the Center for Strategic and International Studies estimated the Iran war had cost nearly $30 billion, with the Pentagon expected to seek an $80-100 billion supplemental appropriation. The administration floated a total supplemental request exceeding $200 billion. Fiscal conservatives including Sen. Rand Paul and Rep. Thomas Massie announced opposition to supplemental war funding, while Democrats introduced legislation to prohibit appropriating funds for the Iran conflict without congressional authorization.