President Trump is putting a political spotlight on autopens, machines that have been used for decades by presidents, writers and more.

The president has said the previous administration used the device to sign executive orders and pardons that President Joe Biden wasn’t aware of — a claim Biden vigorously denies.

White House press secretary Karoline Leavitt at the podium on Tuesday said that the Department of Justice is "looking into" documents signed via autopen following a question from FOX News White House correspondent Peter Doocy on pardons.

The House Oversight hearing follows a report that Biden issued major climate policy changes via executive action and an autopen without speaking publicly.

House Oversight Committee Chairman James Comer is praising the reported Trump administration probe into former President Biden's pardons.

We decided to go straight to the source. We tracked Biden’s autopen down to a Government Services Administration warehouse.

Autopen has always been mildly controversial, implying an air of inauthenticity or even laziness on the part of its user. Most presidents who used them were not inclined to talk about it publicly, and the polygraph remained something of a state secret.

Mo., has claimed that Biden would sometimes get lost in a closet inside the White House, citing a Secret Service whistleblower.