Whilst it would be nice to see a PCG US VS, I'd be surprised if there was one. Many who have played the original over the years are already part and parcel of "Gemini" server, which is located in the US.... so I'd imagine that they are entrenched in their own outfits.
VS are mainly Azure Twilight
to link name two for you.
Azure Twilight runs op's from about 7pm EST and primarily runs infantry groups, that do Galaxy drop's, MAX zerg's. Effective and well co-ordinated, but hated by NC/TR because they turn the tide so often and help push their other VS groups forward. Not so hot during the european day time,
GOTR, run's everything, from infantry to artillary, from tank's to gunship's and can often put 50+ people in the field under one commander with little hassle. They work well with AT above and have a good reputation with many other outfits. Again not so hot during the european day time, early EST/PST, but you do find lurker's playing at all hours.
I am sure I am missing many other great outfit's but these two spring to mind if your looking for VS on the original game and/or launch of PS2.
Hopefully, someone from PCG US will step up and create a guild for you all, but these should keep you going in the meantime.
Good luck solider.
GOTR - http://gotr.us/page/pillars.html
Azure Twilight - http://azuretwilight.org