The effective interest rate on US government bonds over 10 years, known as the 10-year Treasury yield, has risen as high as 5.04% but has eased back since.

The US president's comments come after Anthropic co-founder Jack Clark told the BBC an AI "kill switch" may need to be mandatory.

With Trump opposed and Congress divided, new safety legislation on AI is unlikely to pass anytime soon despite mounting pressure.

Relocation schemes offer support for people who want to swap big cities for a cheaper, quieter life.