Multiple sources indicate the US has initiated actions related to blocking or controlling traffic in the Strait of Hormuz due to the crisis. One web search explicitly states, 'The US has started a naval blockade of maritime traffic entering and leaving Iranian ports.' Furthermore, Wikipedia entries describe the Strait being 'largely blocked by Iran' and the US beginning an 'aerial campaign against Iranian targets to reopen the Strait of Hormuz,' supporting the theme of US intervention to control the waterway.

The claim is supported by a web search result citing The Washington Post, which reports that 'the Pentagon has told Congress it could take six months to fully clear the Strait of Hormuz of mines deployed by the Iranian military.' This corroborates the core elements of the claim, specifically the Pentagon's estimate of six months regarding clearing mines.