Réponse :
1- Right now, Jackson is on the $20 bill and it was discussed and signed (by the Obama Administration) that Tubman will replace him on the bill.
2- The Trump administration said there are more important things to be worked on right now but offered to put him on a $2 bill, which is the kind of bill also nodody knows. It is an issue the whole point of having Tubman on the bill was to raise awareness of Black living condition in the US while Jackson owned slaves (which make it problematic to have a slave owner on a $20 bill).
Explications :