BS. If you want to point fingers take a gander in the direction of jeff davis.
Chu is a jerk and I don't agree with him about taking Jackson off the $20, but in spite of himself he does suggest a valid point -- for all the talk about "tyrant Abe" other presidents, sometimes Southerners, sometimes libertarian heroes, pulled some pretty rotten stuff with much less justification. Antebellum America wasn't the libertarian paradise it's sometimes made out to be.
I do wonder, though, if we are supposed to apologize for every sin of the past, doesn't that mean that we can't escape those sins, and might as well keep Jackson, Jefferson, and the others on our money? If after 100 years and all the struggles, this is still an issue, apologies, etc. won't make it go away.