I have always looked longingly at the modern, airy US Terminal as the M60 pulls into LGA and drops me at the dumpy main terminal building where I fly AC, AA or UA, wondering if it was really a nicer environment than the one I was "enjoying". All wings at the main terminal are dumps and have some of the slowest TSA lines in the country (rivalled only by those in the C terminal wings at EWR*). The UA lounge used by UA and AC (it was the old CO lounge) is landslide, so hard to relax knowing what lies ahead to get to the gate (no TSA PreCheck as yet). And flying AA commuter flights means the Admirals Club is in another wing of the terminal requiring a double dose of TSA and long lines and waits. So with the merger I had looked forward to the possibility that AA would move over into the US terminal...until I did a search here to discover two years ago DL moved some flights and took over a number of gates there. Even assuming DL moved into AA's space in the main terminal, and a rationalization of duplicate flights between AA and US took place, would there be enough space for the merged carrier to operate out of the US terminal? Since I've never been through it, I only know it can't be as bad as the main terminal. Would appreciate some informed speculation from my new brothers and sisters who fly US. (I have flown US a few times over the past couple of years, so for the most part have positive impressions though not glowing. Did like the international Presidents Club at PHL...and the CLT one isn't too bad. Really like the bags of multigrain chips and containers of salsa! Hope we see them soon in the Admirals Clubs.) * Why is it the major city in the USA has two of the worst airports on the planet (JFK is getting its act together, but $5 to get to the Metro is scandalous!)? And after 12 years they haven't figured a way to get us between terminal piers without having to re-clear security!