Analysis: Per my research, from GOV I’ve found that Switzerland’s lack of a treaty with the U.S. is not necessarily a sign of strained relations but rather a reflection of its commitment to neutrality and individual rights. However, Switzerland does cooperate on a case-by-case basis. One famous case of non-extradition https://socialaffluent.com/story4000340/un-arma-segreta-per-english-speaking-lawyer-germany