<P> APHIS imposes similar testing and certification requirements on horses from other parts of the world but without the quarantine for VEE . These horses are held in quarantine--usually three days--or until tests are completed . Because the disease equine piroplasmosis (equine babesiosis) is endemic in Mexico but not established in the United States, transportation of horses from Mexico to the United States requires evaluation of horses for the presence of this disease . </P> <P> Transportation of horses from Mexico to the United States normally requires at least three days in quarantine, which is incompatible with most recreational equestrian travel across the border . A leading exception to this rule is the special waiver obtained by riders participating in the Cabalgata Binacional Villista (see cavalcade). </P> <P> Import from the United States to Mexico requires evidence within the prior 45 days of freedom from equine infectious anemia, among other requirements . In August 2015, Mexico began enforcing a rule that all foreign citizens that plan to stay in the country for more than seven days or are travelling on business will have to pay a 330 peso (21 dollar) fee and show their passport . </P>

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