The Extradition Clause Durante the US Constitution requires states, upon demand of another state, to deliver a fugitive from justice who has committed a "treason, felony or other crime" to the state from which the fugitive has fled. Extraditions between any two countries are typically regulated by an extradition treaty, https://www.eucriminallawyer.com/english-speaking-attorneys-solicitors.html?limit=200&start=13400