The Trump administration’s official policy during both of his terms has been to use the president's hand signature on every legally operational or binding document, according to the White House.

The device has been used in one form or another since at least Franklin Roosevelt's administration, but Donald Trump wants to cast doubt on pardons.

President Donald Trump claims, without evidence, that his predecessor’s pardons for members of the House select committee that investigated the Jan. 6 attack are invalid because then-President Joe Biden didn’t use a real pen.