Gerald Ford’s pardon of Richard Nixon is a prime example, even though the two were from the same party. Ford judged that the republic wouldn’t be well-served by prosecution of a former president. George W. Bush didn’t seek to prosecute Bill Clinton for perjury, although legally he might have been able to do so.
And Barack Obama didn’t seek to prosecute Bush administration officials for acts that likely counted as torture.
In each instance, there were other political reasons to avoid prosecution. But the dominant rationale was surely that each president wanted to avoid the specter of using executive office to go after opponents or former presidents.
This shows that even in the U.S., the value of democratic alternation weighs very heavily -- more heavily than criminal justice. Trump’s threat to jail Clinton shows he doesn’t value that tradition of alternation. Even if he’s not elected, that’s a dangerous view.