I believe he means a "packed" supreme court and not a "stacked" supreme court, although it is an intriguing suggestion.
Aaron RuparTrump on El-Sayed: "If he succeeds, the Dumocrats will gain 4 Senators, 8 Congressmen, many Electoral and Popular Votes, a stacked Supreme Court with 23 Justices, and I will be, sadly, despite the great job we are doing, the last Republican President!"
