SCOBA isn't a jurisdiction its a group of Bishops (Not unlike the Catholic council of Bishops). Also there is no Patriarch of America (despite OCA chest pounding).
The major reason for the multiple jurisdictions is the soviet attack on the church. The EP isn't helping this by granting anyone who asks autocephally under the EP.
"The major reason for the multiple jurisdictions is the soviet attack on the church."
That's almost right. The reason we have multiple jurisdictions was the Russian Revolution. Before that, for all practical purposes, Orthodoxy in America was under the Russian Church, no matter what one's ethnicity was.
"The EP isn't helping this by granting anyone who asks autocephally under the EP."
But exactly the opposite has happened here in the States. When SCOBA under Iakovos moved in the direction of an American Church and autocephally, he was "retired" by the EP and that was the end of that. The nearest we have come since is with the GOA at the very end of the Spyridon years In all honesty, though, the American Church is not nearly mature enough in its Orthodoxy to be autocephallous. I do think we should be united in one church, but not autocephallous, maybe not even autonomous.