The US Supreme Court has delivered a stinging rebuke to President Trump, ruling that the 14th Amendment’s guarantee of birthright citizenship cannot be unilaterally revoked by executive order. For markets, this is not a culture war skirmish but a fiscal reality check. The ruling shores up the demographic base of the US economy, ensuring continued labour supply.
Yet it also underwrites long-term entitlement liabilities. Gilt yields and Treasury bonds will digest this slowly. The market’s bottom line?
Stability now, but a heavier tax burden later. Capital may flow to US assets on the certainty of the ruling, but inflation expectations could rise if immigration strains public services. The City watches with a sceptical eye: this is a victory for constitutional order, but the price of that order will be measured in trillions of dollars through the welfare state.
