[vlahmot]

It doesn’t though. Poverty is well defined (and is defined based on the number of people in the household).

https://aspe.hhs.gov/poverty-guidelines

[AdrianB1]

So wages should be linked to the number of people in the household? Workers with more kids should earn more by law?

We do this is Europe, we pay something called 'kid allowance'. In some places people make 10 kids for the allowance, ignore them or mistreat them and live on that money.