User blog comment:Kombatgod/Street Fighter Alpha 2 Ken's stage/@comment-1085174-20120127223221

I don't know about official names in SFA2. I believe it is only identified as "Ken's Stage". In-game it's just "U.S.A." like other 5 stages or so... Maybe an unofficial "Eliza's Birthday"? Kinda referring to the event rather than the stage itself...