The pronatalists who believe Trump's White House is on their side

The US is at a record low of 1.62 children per woman, and by the end of the century the UN projects a majority of countries will have a shrinking population.

The US Vice President JD Vance has spoken openly about his views on procreation.

Elon Musk , who is said to have fathered 14 children, has called fertility decline "the biggest danger civilisation faces, by far".

Pronatalist thinking may be starting to influence policy that is less explicitly about fertility.

Some believe they already are being heard at the highest levels of government.

Some say they have submitted draft executive orders to the Trump administration.

But there are, however, cracks in the alliance which add to the challenge of trying to cohere the movement.

Some of those attending the recent conference describe themselves as "race realists" One has published offensive views alleging a link between intelligence and race that, according to many scientists, are plain wrong.

But one expert suggests they are doing little more than stirring up controversy.

The executive order to improve access to IVF could show the influence of the tech-right on policy.