i mean there's other ways to address that, which the government is clearly trying to do like with overturning roe v wade. but if you want the root cause of the declining birthday then it's feminism but a lot of women have to work so families can make ends meet because of the rising costs. it's a catch 22 where unfettered immigration is the only "solution" if they refuse to fix the causes for the low birth rates. the lowest birth rates in the world are korea and korea is the most feminist country on earth, to the point where they were ran by a literal feminist cult. but even if it's fixed, again the rising prices are still a concern. companies have to be okay with the numbers not going up constantly for the sake of the country. saving money by skimping on parts and hiring shit labor has real repercussions as shown by boeing and norfolk southern.
United States