No, the bill provides that the $2 billion are considered as a reserve. To my knowledge, the bill does not contain a provision for those $2 billion to be refunded. So, this is a transfer. The bill does provide for the $2 billion reserve to be indexed. There is no provision requiring the money to be returned to the government, to the CRF, in any well-defined timeframe. The $2 billion are not considered as an advance, but as a transfer.
On May 1st, 2008. See this statement in context.