We do not get this sort of research done in Australia, since our academics almost totally conform to the politically correct catechisms of the present establishment, which accepts mass immigration as a matter of religious faith. But, there is critical deconstructions conducted in the US:
https://vdare.com/articles/national-data-yes-virginia-it-s-a-national-emergency-out-of-control-immigration-massive-american-worker-displacement
“December’s jobs report, widely hailed because of strong employment growth, also revealed a massive immigration influx, far in excess of estimated legal inflow. And native-born American worker displacement remains close to record highs, continuing an Obama-Era trend that the Trump Administration has totally failed to break. The strong economy is muffling the impact. But what when the next cyclical downturn arrives? American worker replacements are entering the country in near-record numbers: the immigrant population of working age (16 years plus) increased by 1.439 million in December, the fifth consecutive month of 1 million+ growth. There are seasonal trends at work here, of course, so it is particularly alarming that the year-over-year increase this December was larger than in any December since 2008. With legal immigration running at about 1 million per annum, this figure implies a net illegal worker influx potentially in the hundreds of thousands. (In contrast, immigrant working age population actually shrank in the last five months of 2017 when the now-vanished “Trump Effect” seemed to be really taking hold.)”
President Trump, still a big America elite, is doing what John Howard did when he accelerated the immigration replacement program, focus public attention on illegal immigration, while ramping up so-called legal immigration to keep the capitalist superclass happy. When will people wake up to this? Ever?