The question applies equally the other way round: why, instead of an race-obsessed government determining that having children is a 'public matter, not a private one' and chastising women for having the temerity to prioritise other things, do we not simply permit people willing and able to do the work into the country?

Irrespective of the merits or lack thereof of paying bonuses for having three or more children, fertility rate in Hungary is still well below replacement rate, and well below the US birth rate for that matter.