 The respondents claimed it was not, since they were Canadian, most of the crimes took place in Canada, and could be tried in Canada.While the Supreme Court acknowledged Canada could justifiably try the respondents itself, the US was justified to try the respondents as well, and it was the US that would have absorbed most of the negative impact of the crime.Extradition was therefore rational since "It is often better that a crime be prosecuted where its harmful impact is felt and where the witnesses and the persons most interested in bringing the criminal to justice reside."