When it comes to leasing aircraft the US government has no restriction against the UK. All of the 727s I use to fly with the USMS have been replaced by 737-800 from,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,gasp , British Airways.
British Airways was the lowest bidder, go figure. So I guess it is not one rule for us and not another for the rest.
What are you talking about? BA does not own or operate B737-800s