On the basis of the details supplied by the Deputy, the individual referred to is a Canadian national and as such is not required to obtain a visa prior to entry into the State. A visa sticker is only a form of pre-clearance for entry to the State. Entry into the State is entirely at the discretion of the immigration officer at the port of entry and is subject to the person complying with the conditions of entry into the State. The person may be permitted to remain in the State for a maximum period of 90 days. It is the policy of my Department not to extend a permission to remain to persons who are admitted for a period of 90 days or less on a short stay visit, save in very exceptional and unforeseen circumstances.