I have to say I am stunned at how uninformed and ignorant many posts here really are.
First of all, 99% of those supporting the change in the $20, support it out of "white guilt" or pure ignorance. If Harriett Tubman was white, she would never be on a $20. Period.
Second of all, NO ONE knows who Ms. Tubman was. No one cares. Slavery ended over a bloody Civil War between the States, NOT because of Ms. Tubman. Ms. Tubman did nothing to end slavery as an institution. That is a fact. I am sorry if that upsets your leftwing sensibilities. Honestly, life is not a "Safe zone", so you are wrong if you think Ms, Tubman did anything meaningful.
Third, Andrew Jackson did amazing things, things unimaginable in today's America led by a failed douchebag named B. Hussein Obummer.
Just to name a couple accomplishments of Andrew Jackson:
1) Ended the central bank (Federal Reserve) of its day by sheer force of will and desire to protect Americans.
2) He paid the entire national debt during his term.
3) Survived 3 assassination attempts.
4) Created a national identity (vs state-identity) after Battle of New Orleans. His victory in New Orleans during War of 1812 generated national pride and people began to identify as "Americans" rather then "Virginians" or "New Yorkers" for the first time in mass scale. This was critical for national unification and without national identity, there is no telling if Civil War could have unified The North as it did if everyone felt they were only part of States and not part of a unified country!
5) Ended all European desires to re-conquer the United States - forever.
6) Made individual citizen voting deciding factor on all Presidential elections, so that the "insider cabal" of politicians in DC could not manipulate the Electoral College and steal the elections from the popular vote anymore (so long as you get required # of Electoral College votes, based on popular vote of the citizens of each State).
Harriet Tubman did NOTHING nearly as important and nothing to leave such a legacy. Her legacy is of accomplishing almost nothing of long-term value. She did nothing to end the institution of slavery and that is what REALLY mattered. This is PC (Politically Correct) garbage at its best. As I said, Tubman would never even be considered if she was white, hispanic, or even asian. This is just PC police on patrol.
Finally, if anyone should come off the Dollar bill, it is Alexander Hamilton. That useless kook suggested the United States, after countless sacrifices made by its people for freedom and independence, that we should go back to being serfs under the British Empire, to have a stronger currency.
Here is to hoping the next president, hopefully, Middle Class American hero Donald J. Trump, reverses this idiocy. We need to end PC nonsense like this in the United States for good.