How Trump's White House ballroom plan has doubled in size and cost over a year

In the year since US President Donald Trump announced plans to build a new ballroom at the White House, the proposals have grown to include a rooftop "drone port", an underground hospital and "top secret" military facilities - and the estimated price has doubled to $400m (£300m).

Despite promises from Trump that the project wouldn't cost US taxpayers any money, Republicans have requested additional funds from Congress for security around the complex - at a time when Americans are struggling with rising living costs linked to the Iran war.

The president indicated from the outset that the new ballroom is needed to "accommodate people for grand parties, State Visits", and more recently said it is "vital for National Security".

BBC Verify has examined how the biggest change to the White House in decades has transformed over the past year.

Trump has repeatedly claimed the ballroom, which was originally expected to cost $200m (150m), will be built at "zero cost" to taxpayers because it will be funded by himself and through private donations.

But in May, Republicans requested funding for a $1bn (745m) security package which reportedly included $220m (165m) tied to the new ballroom specifically.

It was rejected by Congress and eventually dropped, but a separate $400m Republican-backed security bill linked to the ballroom is ongoing. Senator Lindsey Graham, the bill's co-sponsor, has said this would be paid for by charges on goods and travellers entering the US.

BBC Verify asked the White House for an updated breakdown of how much will be paid for by the president, by donors, and by taxpayers - but it said it had no further details to add.