They were probably here picking up a couple of pallets of sensitive and classified military equipment to examine and copy.
Or another shipment of medium size condoms.
Could be that it was leaked by someone who wanted support for a larger defense budget. Still, for the life of me, I can't see that it matters where a Russian sub is. The Gulf of Mexico covers 600,000 square miles; 810 miles across. We should declare it off limits? Nah.