Except it's wrong IMO to assume that removing (illegal) immigrants would result in a labour deficit, because illegals work in illegal jobs that only exist because they can take advantage of their workers illegal status. i.e. those jobs only exist because of a cheap, disposable and illegal labour market, and if that labour source disappears then there is no reason to assume those employers wouldn't too (because they would be built around profiting from said illegal labour, not around paying wages and meeting legal H&S rule, etc). If they only exist to make money by exploiting illegal workers, how eager would they really be to legitimise and have a 'proper' business model of proper wages and health and safety observance, etc?
Most of those jobs aren't illegal per se - take, for example, construction, cleaning, house-sitting, etc. They're only illegal if they employ illegal workers. Take away the workers and you have two choices: hire legitimate workers or do without. Some (those whose labor demand thresholds are too low) would do without, but some (those whose thresholds are high enough) would hire legitimate workers. This can be demonstrated on a standard supply-demand graph.
To me it's a sticking plaster to just go 'get rid of illegal workers and everyone can get well-paid jobs' (which seems to be a common assumption made, usually when you have the likes of the Daily Mail railing against illegal immigrants in their pseudo-racist editorial stories), because how many employers that hire illegals do so because it's cheap, easy, and liability free rather than because they can afford proper workers but don't want to pay?
How many of these employers are genuine honest businesses that simply can't afford legal (usually low skilled) workers, and are 'forced' to take illegal immigrants? And how many exist simply and only to take advantage, not as legitimate companies? I'd say the latter is higher than the former, myself - and these companies only exist because they provide a service that's cheap. Make them legit - assuming they'd want to - and they become too expensive for their customers and go out of business anyways.
They employ illegal immigrants because it's the cheapest option available. If that weren't an option, they'd have to find some alternative, and the market would adjust to accommodate it.
You know, you're doing the same thing as on Sectorgame - dancing around the implications instead of confronting the central point.
I think the central point is wrong, and I've said so. These employers exist because they can make easy money through illegal immigrant employees, not for any other purpose. Their sole reason for existing is the black labour market; that's the reason they're not legit companies. Even if the industry exists in a legit capacity, there will be a group of 'providers' (so to speak) and customers who only exist because they can do it cheap and on the side; even subcontractors to large, legit, companies who only survive by cheap contract bidding based on the use of illegal labour. Same as with any black market.
Now, you seem to me to be making a big assumption that it would automatically entail that demand would be sufficiently high to legitimise those jobs, rather than illegal hirers simply vanishing away for more lucrative (and probably illegal) markets; my whole point has been that that's not necessarily true; how many companies using illegal labour do so whilst being able to use legal?
There's a side issue, of course, as in how many people would do those jobs in the first place - particularly in any first world country with a decent education system, where those types of unskilled labour are sidelined (and even skilled trades like plumbers, electricians, etc end up being short of people despite good pay). Especially as there's another question as to how many companies that would legitimise, are actually using illegals because they can't get legal workers to pick crops, etc, at the legal minimum wage they can afford?
Not sure what the hell you're on about with regards to Sectorgame, though.
Although aren't the implications the central point here? I mean, if you want to advocate it, isn't it just a wee bit important to consider the consequences and ramifications?