Step one: Delay any investigations, say they are premature and a “political witch-hunt”.
Step two: One investigations finally begin, provide as little information as possible. Delay, deny, obfuscate.
If done properly the two steps above should drag things on for about two years.
Step three: “Dude, that was like two years ago!’
Rinse and repeat
You forgot one, which I’m sure we’ll see shortly.
Delay, deny, obfuscate, make counter accusations.