Pursuant
to the Ker-Frisbie rule, under certain circumstances,
the United states may abduct fugitives from a foreign
country without first obtaining the foreign state's consent.
See Ker v. Illinois, 119 US 436, 7 S.Ct 225, 30 L.Ed.
421 (1886); Frisbie v. Collins, 342 US 519, 72 S.Ct. 509,
96 L.Ed. 541 (1952) However, if the United States has
an extradition treaty with the foreign country, it is
necessary either to obtain the foreign state's cooperation
or consent prior to apprehension, or for the foreign state
not to protest the apprehension. See United States v.
Verdugo-Urquidez, 939 F.2d 1341 (9th Cir. 1991).