Once again, this is not even a debate, you are absolutely wrong. At no point in 2008 was Obama President. September 18th, 2008, Obama was not even President-Elect, though it was looking more likely that he would become President.
In 2006, the FBI gave Epstein, and unnamed "potential co-conspirators" a non-prosecute agreement. From 2006 until January 20th, 2009, more and more attempts were made to make that agreement bulletproof. On January 20th, 2009, everything changed, and for the next 8 years the DOJ tried to remove the non-prosecute agreement.
Do you know what else happened on January 20th, 2009? Obama became President. Note, January 20th, 2009 is after September 18th, 2008. I cannot stress this fact enough.