[WoW]US-based MMOwned guild?

[Muramasa]

Is there one? Faction is of no importance, I can always switch to horde if necessary.

Would preferably like one that is also concerned about progression, has a raid team et cetera, although again not required.

Requirements:

20+ Active members
English or Engrish speaking
Exploration-related Guild Events

[Notahax]

Tried countless times and has always failed