Senator Mitch McConnell, the influential Republican chairman of the Senate Appropriations Defense Subcommittee, has been hospitalised since 14 June 2026, leaving him absent from a major Senate fight over America's defence budget. His absence matters because he is a central figure in shaping how $350 billion in annual Pentagon funding — covering military pay, shipbuilding, missile defence and weapons modernisation — is allocated, and it raises questions about who will guide Congress through one of the year's biggest spending battles amid rumours about his health.

Beyond his absence, there is a procedural dispute over how the defence money should be approved. The Trump administration wants to push much of its defence agenda through budget reconciliation, a shortcut allowing legislation to pass the Senate with a simple majority rather than the usual 60 votes. McConnell has been among the loudest Republican critics of this approach, arguing that defence funding should instead go through the traditional appropriations process, which allows fuller debate, amendment and scrutiny, and warning that relying on reconciliation could weaken oversight.