Ronnie Reagan couldn't see the sense in fighting over "a bunch of rocks" and had to be persuaded as to where the loyalty of the US should lie.
I think you may find that there was a US carrier crewed and ready to go should Britain have lost one of ours. The last thing Reagan wanted was the humiliation of his closet ally and political friend by a tin pot South American country. The US were Britains biggest intel provider in this conflict along with other discrete assets. this is all documented in Thatcher and Reagans memoirs and a couple of other books.
Ooops soory thread drift.