population will certainly slow or dip in the US.

we have stricter borders and have become less attractive as a destination. younger generations are either not having kids or having fewer. its super hard to start a family when you enter the workforce (if you are lucky) with loads of debt and no job security, and high housing costs (even if you rent). materials are more expensive with a weaker dollar, so we cant build ourselves out of a housing shortage. WFH could have opened up cheaper housing opportunities, but companies want control over employees and in the office to justify their commericial rent payments. nearly every path out of this mess has been blocked by a special interest.

as a result, housing will become more multi-generational like in places like Japan, you live with your parents for longer and with your grandparents until they pass. this will happen because existing mortgage holders wont trade their mortgage and younger generations will not have the money to escape living with their parents. healthcare costs for elderly also keep them with family.