You don’t laugh your ass off over losing the presidency and Congress, then the FBI.
They want immunity and are sure they can pull off the same sort of thing as the "Orange Revolution" that they pulled off in Ukraine. If they shed Trump, Pence is a lame duck for the balance of the Trump term and won't resist the Congress Uniparty. Then, comes 2020 and what's the expected result if none of the people who have rigged elections for decades have been prosecuted because they all had immunity?
In their view, as long as they can incite violence and put mobs in the streets they haven't lost anything but a single skirmish in a long war.