"We are trying to identify employers that might be [hiring illegal aliens] and to take effective action against them. We're trying to make sure that employers that want to cooperate have a system whereby they can verify the employment status of a person that they are seeking to hire. It is part of a comprehensive initiative in which we look both at the border, at the workplace, at criminal aliens, in an attempt to have a comprehensive effort aimed at stopping illegal immigration while at the same time promoting legal immigration according to principles of due process."