President Donald Trump claimed Monday that pardons recently issued by Joe Biden to lawmakers and staff on the congressional committee that investigated the Jan. 6, 2021, Capitol riot have no force because the-then president signed them with an autopen instead of by his own hand.

Donald Trump says Joe Biden's last-minutes pardons via autopen are null and void. But what is an autopen? And what does it mean for pardons?

The president has recently made baseless claims that Joe Biden routinely used an autopen and that his unelected aides used the executive power of the presidency without his knowledge.