The woman who could bust Trump's 'big beautiful bill'

Senate Parliamentarian Elizabeth MacDonough may not be a household name, but the so-called referee of the Senate has found herself the centre of a firestorm after she objected to several parts of US President Donald Trump's mega-sized tax bill.

The 1,000-page document, which he's dubbed the "big beautiful bill", would slash spending and extend tax cuts.

But Ms MacDonough has said that certain provisions violate senate rules, throwing billions of dollars of cuts into doubt.

Her findings have also made it difficult for Congress to pass the bill by 4 July - a deadline set by the president himself.

Now, some Republicans are calling for the Senate to ignore her recommendations - going against long-standing tradition - or to fire her.