That has been The American Way and will for the forseeable future remain that way. Neither party is really interested in fixing it, just one of them is less inclined in furthering it as much as the other.
Same exact logic as increasing everyone’s rates due to datacenter demand.
Wealthier, more cohesive and communal and less-unequal societies, with better education and medical and child care support across the world have dramatically fewer native births than the US.
Unless you're planning on forcing women to have children at gunpoint[1], or banning all forms of contraception[2], or making everyone stupid and poor[3], there doesn't seem to any way to raise birthrates in industrialized societies.
Exploitation of migrant/temporary/undocumented workers is a separate problem.
---
[1][2][3] These do seem to all be on the roadmap for people whose political sails are most closely aligned with nativist anxieties. And I have not a drop of tolerance for any of them.