To the posted question, none. Why would you even consider Pres. Obama to be the messiah? He's the President of the USA, nothing more or less. He wanted the job, now he's got it and he's got his hands full. I hope he can find solutions to our many problems, and find a way to regain the economic prosperity we once enjoyed.
As to the comments by Mack and morethan1, you're both wrong. The Supreme Court's definition is based not on the Bill of Rights, which contains the phrase "separation of Church and State", but the 1st Ammendment that states there will be no State Sponsored Religion, "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof;". This is the Constitution by which all laws are measured against. For morethan1, I don't know what country you're from, but our Country was founded on the Constitution of the United States of America, and at that time it had 10 Ammendments that defined the laws of our land. There was not a specific reason given amongst the founding fathers that stated our Country needed to be borne to realize "seperation of Church and State".