Otherwise he'll be back to haunt you later. Just two examples:
Eliot Abrams pled guilty to Iran-Contra affair crimes that he committed during Saint Gipper's reign, but Poppy pardoned him just before leaving office. Junior appointed Abrams to the post of Special Assistant to the President and Senior Director on the National Security Council for Near East and North African Affairs. He planned the Venezuelan coup attempt of 2002 against Hugo Chavez. Junior appointed him Deputy National Security Advisor in 2005. Abrams is a member of the Project for a New American Century (PNAC) and one of the key neoconservatives who signed the
January 1998 letter to Clinton urging him to invade Iraq.
John Poindexter was convicted of multiple felonies associated with the same Iran-Contra affair. The convictions were reversed in 1991 on the technical grounds that the prosecution's evidence may have been tainted by exposure to his immunized testimony before the joint House-Senate committee investigating the matter.
Poindexter was appointed in 2002 as Director of the Information Awareness Office (IAO) in our Defense Department's Defense Advanced Research Projects Agency (DARPA). There he employed a program called Total Information Awareness (TIA) to develop an Orwellian mass surveillance system. The TIA program name was changed to
Terrorism Information Awareness in 2003 in a vain attempt to deflect critics of its domestic spying. In 2004 Congress defunded TIA and specifically directed that the IAO be closed. But several TIA projects were just moved to classified segments of Defense appropriation where they are not subject to public scrutiny, such as those of the National Security Agency (NSA). These projects then became part of what we know today as the ongoing scandal that started in 2005 on account of warrantless NSA domestic spying.