"We will be looking at this issue. It's not something that I'm focused on at the moment," Mnuchin said in a CNBC interview when asked if he supports the plan, announced by the Obama administration, to redesign the $20 bill with an image of Tubman in place of Andrew Jackson.
"People have been on the bills for a long period of time. And this is something we will consider," Mnuchin said. "Right now, we've got a lot more important issues to focus on."
Tubman, who would be the first African American pictured on the face of U.S. paper currency, was born to slaves in Dorchester County. She made about 13 missions to rescue dozens of slaves, using a network of safe houses known as the Underground Railroad.
During the Civil War, she was also a spy and a nurse for the Union army.
Sens. Ben Cardin and Chris Van Hollen, both Maryland Democrats, said they were concerned when Mnuchin refused to commit to the redesign in the interview.
"Tubman is fully deserving of this honor," the lawmakers wrote in a letter to Mnuchin. "Those we honor on currency make a statement about our nation and our values."
When Gov. Larry Hogan officially dedicates the state park and visitors center on FridayMarch 10, it will be the most recent in a series of tributes the nation is belatedly paying to the Underground Railroad's most renowned conductor.