(Australia, US, slang) The federal level of government, viewed as a collective group of people. Typically its law enforcement agencies and officers.
Which leaves the states in an awful hole. The Feds have ripped $80 billion out of their budgets over the next 10 years. 2016 February 10, Peter Martin, “State governments are about to hike up taxes”, in The Sydney Morning Herald:
(Multicultural-London-English, US, slang) Law enforcement; cops.
"Why don't we pull him in on tax evasion or misuse of the mails or parkin' in front of a hydrant or sumpn? Take him down to the Tombs and give 'em the works? If the Feds won't do it, we'd be glad to oblige." 1954, Ian Fleming, “The Big Switchboard”, in Live and Let Die, London: Pan Books, published 1957, page 36: