US immigration is near its 100-year historic peak [1], and takes the largest share of international migrants [2]. If that's "very little", then what would merely "moderate" immigration look like?
Your first link notes a slowing down of immigration to US 2017-2020. I wonder why? Your second link is claiming data from the US as having the most foreign born residents.. From 2006. Although that hasn't changed in recent years. US immigration is, like many things, at a historic peak because population size is at a historic peak. Percentage-wise, foreign born immigrants make of a record high proportion of the US population, probably due in large part, again, to our declining birthrates. Our population is aging at record rates as well, and our dependency ratio is increasing. We'd better hope immigration continues, or who is going to take care of all the old folks? There are economic consequences to declining and aging population.
> Your first link notes a slowing down of immigration to US 2017-2020.
A small slowing down, that still left immigration higher than at almost any other point in US history.
> US immigration is, like many things, at a historic peak because population size is at a historic peak. Percentage-wise, foreign born immigrants make of a record high proportion of the US population
Your second sentence directly refutes your first - US immigration is at a historic peak in both absolute and relative (compared to US population) terms.
> Our population is aging..
That's an argument that immigration is necessary, not that it's "very little".