US capital ships replace the wartime Mediterranean Fleet

What if US capital ships replaced the Royal Navy's Mediterranean Fleet during the Second World War?

If the exchange includes the whole available American force, its numbers and modern battleships would probably compensate for the loss of suitable British ships.

The result depends on which American capital ships the exchange includes. Taking the whole available American force would provide enough battleships to compensate for losing British ships fast enough to catch their opponents. Including North Carolina and the South Dakota class would also bring modern American capital ships into the Mediterranean force. Under that broad reading of the scenario, the replacement fleet would probably perform adequately despite the change in its composition.