Facebook's Clubhouse competitor, Live Audio Rooms, is making its way stateside. The company announced today that some U.S.-based public figures, as well as certain groups, can start hosting rooms through the main Facebook iOS app. (People can join, however, from both iOS and Android.) Anyone can be invited up as a speaker with up to 50 people able to speak at once. There's no cap on the number of listeners allowed in — a major shot at Clubhouse, which imposes room size limitations.