The cuts achieve only a tiny fraction of the US$1 trillion in annual savings that tech billionaire and estranged Trump donor Elon Musk vowed to find before his acrimonious exit in May from a role spearheading federal cost-cutting.

However, Republicans, who recently passed a domestic policy bill expected to add more than US$3 trillion to US debt, said the vote honoured Trump’s election campaign pledge to rein in runaway spending.

“President Trump and House Republicans promised fiscal responsibility and government efficiency,” house speaker Mike Johnson said in a statement just after the vote.

“Today, we’re once again delivering on that promise,” Johnson said.

Both chambers of Congress are Republican-controlled, meaning a party-line House of Representatives vote of 216 to 213, moments after midnight, was sufficient to rubber-stamp the Senate-passed measure.

Most of the cuts target programmes for countries hit by disease, war and natural disasters but the move also scraps US$1.1 billion that the Corporation for Public Broadcasting was due to receive over the next two years.

Conservatives say the funding – which goes mostly to more than 1,500 local public radio and TV stations, as well as to public broadcasters NPR and PBS – is unnecessary and has funded biased coverage.