Originally Posted by
Driving by DCA
You still wouldn't have full integration because US is mostly in C. There's a bus but it's really faster given the short security lines at DCA to walk it.
Plus, DCA isn't really a connection airport. It's an origination or destination airport. Given that, there's not a real reason to have all of *A together.
Have you ever been in dca... it is the only usairways hub the isn't called a hub. DCA has tons of connecting traffic on US...
I reccomend spending some time at dca at getting familar with the airport...