No he can't pardon himself....
The Supreme Court has never said that.
No, they haven't, because no president has ever done such an unethical thing....Nixon came close..... but no cigar!
I doubt the supreme court would determine the founding fathers of the Constitution, planned for criminal presidents to grant pardons to themselves for their own crimes, when the constitution says presidents can be prosecuted after impeachment from office....every president could just pardon themselves and live in lawlessness....
Would the supreme court really set precedent for every president to be lawless their entire term with no fear of ever being prosecuted for their crimes? Heck no!
We are a Nation of laws, not men.