What exactly is it that you are proposing the donors get in return? "influence"? How do you quantify that? Is it votes? If not votes, then what? Buying "influe

What exactly is it that you are proposing the donors get in return? "influence"? How do you quantify that? Is it votes? If not votes, then what? Buying "influence" is not corruption. Paying a representative or a senator to take specific actions in the course of their official duties would be. Giving money to a senator and then asking them to call the DHS to push your business partners visa through is strictly not corruption. Anyone who'd call this "grossly corrupt" has never interacted with real corruption.