“The President enjoys no immunity for his unofficial acts, and not everything the President does is official,” Roberts wrote. “The President is not above the law. But under our system of separated powers, the President may not be prosecuted for exercising his core constitutional powers, and he is entitled to at least presumptive immunity from prosecution for his official acts.”
Doesn't sound a absolute. If you are referencing other text then please quote so we can see the qualifying language associated with the immunity.