"refill"

They wanted to bring the reserve back to 2008 levels, where the Bush administration had it. The same Bush administration that was so deep in Big Oil's pocket they falsified the existence of WMD's in order to start a war over oil.

We never needed reserves that large which was why we reduced them and kept them lower when a saner administration entered office. If our 2020 reserves weren't sufficient we'd be wiped out right now, but we're still sitting on 400 million barrels and don't need to rush to bring that up.