I don't disagree that descriptors like "extreme poverty" are inherently vague, but I think that's kind of the point - that regardless for where the exact line i

I don't disagree that descriptors like "extreme poverty" are inherently vague, but I think that's kind of the point - that regardless for where the exact line is, we can all agree there's some point where people are unambiguously in the world of "extreme poverty". For people in that world, we can easily pick out the hugest pain points in their struggle - lack of healthcare, lack of housing, and so on. And then, we can structurally change how these resources are distributed by society in a way such nobody will have to live without them. That's really all the progressive agenda is, right? We recognize that having no healthcare at all (and the associated problems with that level of poverty) is immoral, so we want healthcare for all, even if we have to raise the marginal tax rate at the top level to do so (and so on). I don't think there needs to be a formula for what constitutes "extreme poverty" to make poverty less painful for America. Edit: or to put it another way, since most everyone agrees that going full communism is categorically a bad idea, partially socializing resources that can be considered a common good is a good alternative. We already do this with plenty of things, like the military, we're just looking to take it a step further where appropriate.