The campaign was started in June to convince US billionaires to give away at least half of their fortunes either duringtheirlifetimes or after their deaths.
On the entitlement side, the plan would make the Social Security system more progressive (meaning people who have earned more duringtheirlifetimes get fewer benefits), and it would eventually raise the retirement age to 69 by 2050.
Rosenberg has had exclusive buying arrangements with all three painters during much of their creative lifetimes, and every painting in his collection was bought directly from the artist.