The revival of the extradition treaty with Spain forced criminals from the UK to look for somewhere else to hide.
Specialty doctrine- requires that an extradited defendant be tried for the crimes on which extradition was granted, not another.
Extradition between nations is usually based on a treaty between the country where the accused is currently located and the country looking to place the accused on trial.
Rafael Esquivel accused of receiving bribes worth millions of dollars with the sale of marketing rights to the copa America tournaments. (Extradited from US to Switzerland)