Snitch: FBI's use of informants as old as the agency itself
WASHINGTON (AP) — Snitches, moles, spies, whistleblowers. Government informants are an age-old investigative tool that's as much a part of the FBI's 110 years of history as J. Edgar Hoover or its "10 Most Wanted" list.
In the case of President Donald Trump, the FBI called on a longtime informant — identified by several news outlets as an American professor living in Britain — to ascertain whether Trump's campaign aides accepted help from the Russian government to sink Hillary Clinton's presidential ambitions. That jury is still out, with a special counsel appointed to investigate.