A heated exchange over whether immigration is "replacing" American-born workers, framed as a fight over what people are allowed to say out loud.

• The core claim: a rising share of US births are to women born outside the country, so the native-born population is being replaced over time.
• This is pitched as a math question about birth numbers, not an attack on immigrant women themselves.
• Pushback that immigrants "do jobs nobody else will" is brushed aside as a separate issue from the birth-rate point.
• The bigger complaint is that people who raise these numbers get told to shut up and that noticing the trend is off-limits.

Outlook: Immigration and birth-rate demographics will stay a flashpoint heading into the election season, with fights over the data and over who is allowed to discuss it.