President Donald Trump has promoted a large new White House ballroom as being fully funded by private donors, but new legislation could require up to $1 billion in taxpayer money for related security upgrades.

Donald Trump previously said no public funds would be used, but the project now includes extensive security enhancements such as reinforced structures, underground facilities, and bomb shelter elements.

Republicans say the funding is necessary to improve White House security following recent threats, while White House officials argue it supports Secret Service needs.

Democrats criticize the shift as a “bait and switch,” claiming taxpayers are being misled after assurances of private financing, NBC News has reported.

The proposal is part of a broader spending package, and legal challenges continue over whether the project can proceed without congressional approval.