If someone is arrested in another country, and is interrogated and confesses, and is then extradited to the U.S., does the interrogation procedure have to meet our Constitutional standards for the confession to be valid?
IANAL, IANAILS (international law specialist), but aren’t international extraditions the subject of treaties. So, the U.S. signs a treaty with Country X and says “We have evidence that prisoner Y in your country did some bad things in our country, so can you send him to us?”
Then, Country X says “Yes” or “No”. I don’t know about the evidence obtained in the other country.