A non-descript universal pardon is like permission to commit any crime tomorrow.
As long as no one can verify the crime took place after the pardon, you're covered
YOU'RE TELLING ME THAT THE PRESIDENT WHO PREEMPTIVELY PARDONED HIS FAMILY WITHOUT STATING WHAT THEY'RE BEING PARDONED FOR; IS WORSE THAN THE ONE WHO DIDN'T WHEN HE HAD THE CHANCE?