The GOP megadonors funding Trump are shielding him in hopes of thwarting investigation into the money behind the Jan 6 coup attempt.
If Trump gets elected, they escape consequences for funding a seditious conspiracy.
They especially want to avoid investigations on the pressure tactics that got 147 members of Congress to participate in a coup attempt.
https://www.nytimes.com/interactive/2021/01/07/us/elections/electoral-college-biden-objectors.html