Representative Thomas Massie sharpened his attacks on the ongoing conflict with Iran over the weekend, declaring on social media that it could go down as the Trump administration’s most damaging misstep yet.

In a series of posts on X Saturday night, the Kentucky Republican argued that the war would end up costing the administration more than any other controversial move it has made, ranking it above issues he has previously slammed, such as how the administration handled the Jeffrey Epstein files, its approach to tariffs, rising government spending and other domestic matters.

In a follow up post, he broke down what he sees as the financial and political toll of the conflict. Massie estimated more than $100 billion in direct military spending and another $100 billion or more in costs passed on to consumers, on top of what he called an incalculable amount of political capital spent. He went on to say that even those losses are minor compared to the damage done to America’s global standing, arguing that the country should step back from the conflict immediately.

Defense Secretary Pete Hegseth told senators last month that the war has already cost roughly $37.5 billion since fighting broke out in late February. That figure accounts for both current military operations and anticipated costs through the end of the fiscal year on September 30.