They can not pay from abroad if they do not have an account in Argentina

I would like to inform me if anyone knows, how they can pay from abroad without having to create an ML account in Argentina. I decided to implement MP but I am having complaints about when they want to pay abroad. Is it possible to configure some parameter or putting USD in currency_id can?

$preference_data = array(
    "items" => array(
       array(
           "title" => $ref_producto,
           "quantity" => 1,
           "currency_id" => "ARS",
           "unit_price" => $importe
       )
    )
);