Shorter: That's Sweden in the period from 1950s to 1990s: Pareto-optimal. Net births/replenishment numbers were steady at right above the 2.0X mark, mortality was dropping, and the percentage of elders as a part of the whole was rising. So the argument was invented that we needed migration to take care of us when we get old. Rather than accepting that it would be maybe a decade, two at most, with care for elders being a hefty cut of the budget, we started migration that now has a net cost of over 2% of GDP/cap, and that's the low-end estimate. Longer: The Socialist Party was concerned that they were inching closer to losing power every election, since as people bootstrapped themselves via work they stopped voting socialist. The capitalists and bankers were concerned because while Sweden is largely owned by a dozen and a half banking/business-families (the Wallenberg-clan being prominent yet discreet) they feared the humungously bigger german competitors would simply buy them up or out, depriving them of power: better be a big pike in a small aquarium than a small one in the lake mentality. And the intellectuals were riddled with "white liberal guilt", learned when they went to college in the US in the late 1960s. In an infamous incident in the early 1990s when an (attempted) serialkiller, himself of foreign origin, targeted migrants, the prime minister and his minister of migration visited a community centre in a suburb. Things got heated as the foreigners weren't as easily silenced as swedes were back then. And she grabs the microphone and yells like a schoolmarm to rowdy toddlers: "Now, now, settle down. Let's all sing 'We Shall Overcome' together!" Like that, and now here we are circling the drain.