The rise of pronatalism: why Musk, Vance and the right want women to have more babies

In his first address to the United States after becoming vice-president, JD Vance stood on stage and proclaimed: “I want more babies in the United States of America.” Weeks later, Donald Trump signed an executive order pledging support for in vitro fertilization, recognizing “the importance of family formation and that our nation’s public policy must make it easier for loving and longing mothers and fathers to have children”.

In late January, a Department of Transportation memo directed the agency to prioritize projects that “give preference to communities with marriage and birth rates higher than the national average”. And last week, it was reported that Elon Musk, the unelected head of the government-demolishing “department of governmental efficiency” and a man who has said that the “collapsing birth rate is the biggest danger civilization faces by far”, had become a father of 14.

Republicans have long heralded the importance of “family values”. But in these developments, many see mounting signs of a controversial ideology at work: pronatalism.

Pronatalism is so contentious that people often struggle to agree...