How much of this is aimed at people from [developed nation] overseas as opposed to migrants illegally entering from neighboring countries?
I'd think that there are different aspects for dealing with a perma-tourist with a several months of over-stay than with migrants crossing the border with false documents and working under the table and settling down in a villa. I'd imagine that the proportions are vastly different. Which is it that the gov is so concerned about actually?
On the one hand, the overseas types are bring in money and spending it here, most of the time their documentation is defined, complete, and with criminal records checked. These are much easier to detect and manage.
On the other hand continental migrants would be a logistical nightmare, do not pay taxes, strain the social system, and have often been a source of political manipulation, and may be unchecked criminals. If the plan is to detain either of these then the continental migrant might be harder to detain then repatriate without additional reliance on public funds. (this is why I mentioned incarceration as meals and a place to sleep while Arg. gov tries to figure out what to do with them)
