This was posted earlier, but you obviously did not read it completely. According to Pulitzer prize winning Politifact, this was a false statement by the President!
The money was frozen Iranian assets that were part of coalition sanctions for Iran's nuclear program. The assets were unfrozen in recognition of verifying, through international inspections, that Iran was reducing it's nuclear stock pile. The 6 country coalition agreed to unfreeze these assets based on Iran's cooperation with the agreement. Their are other sanctions still in place for human rights violations, support for terrorism and missile technology. The amount actually unfrozen resulted in approximately 56 billion being returned.
F em.