Keep Alexander Hamilton as the only face on the 10 dollar bill, and replace Andrew Jackson on the 20.

Alexander Hamilton, patriot, war hero, founder of the Treasury, Customs service and Coast Guard, the philosopher behind the Constitution, opponent of slavery, and George Washington's right-hand man should continue to be honored on the ten dollar bill, opposite the Treasury Building.
Andrew Jackson's Trail of Tears and other fiascoes should have him replaced on the twenty dollar bill.