The supreme court has reversed the campaign limits for corporations,so they can now spend as much as they want on anything they want.Candidate's or issue's.
The leftist unions are upset that the evil corporations no longer find their 1st Amendment rights violated. Wonder how they felt about unions buying candidates? Big pharma buying Obama? George Soros and his phamtom PACs?
I guess a corporation is OK with a contribution if it goes to promote a left wing radical cause.