Patrick Leahy actually said...

The reason the judge has an obligation to recuse is because of how much money the corporation is spending in the election.

I think they are going to be entirely circumspect about that sort of activity.

Why shouldn't they be able to band together as a corporation, as a sole proprietorship, as a partnership, any other format to do that?

I believe the Citizens United decision turns the idea of Government of, by, and for the people on its head.