What was President Nixon's U.S. Secret Service code name?

President Nixon's U.S. Secret Service code name was Searchlight. Nixon’s code name proved prophetic after he left office following the break-in at the Watergate Hotel and its cover up; Nixon did his best to hide all details from any searchlight.

Also, concerning President Nixon, it was subsequently stated that he never or hardly ever talked to his secret service staff. He could not hold typical conversations that most people normally have everyday. He could only talk about professional needs and issues. He was seen as a calculating individual. He wanted to see what effects his actions and words would have on others. So, in his case, the code name Searchlight is seen as very accurate and appropriate. And, it is now almost a certainty that this presidential moniker will never be given to another president.