On the first day of the Biden presidency, Jen Psaki, the White House press secretary, said that the Treasury Department was “taking steps to resume efforts” to put the abolitionist Harriet Tubman on the $20 bill. “It’s important that our money reflects the history and diversity of our country,” Ms. Psaki said.

But it will probably be years before we see the Underground Railroad conductor gracing U.S. currency, the DealBook newsletter reports.

The reason? The deadline for printing a new version of the $20 bill is 2030. It was set by an anti-counterfeiting committee in 2013, two years before Tubman won a campaign to replace President Andrew Jackson on the bill.

“The primary reason currency is redesigned is for security against counterfeiting,” Lydia Washington, a representative for the Bureau of Engraving and Printing, told DealBook. “The redesign timeline is driven by security feature development.”