Can anyone explain why it is necessary to use this reference?
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Sorry I posted a lot of stuff but on the assumption that your question was aimed at me.......

To your question....
It is not necessary...it began and has been fostered by the Sen Obama camp....THAT is the origin...THAT is where it started and thrives and perhaps you should question them on why they continue the usage of it. As I said in my original response there is even a website which takes MONEY !