Who is paying for Trump's White House ballroom?
The funding model has sparked concern among some legal experts, who say it may amount to paying for access to the administration.
The US president has said that he personally will pay for significant portions of its construction, and suggested that some still anonymous donors would be willing to spend more than $20m to complete the project.
Groundbreaking for the ornate 90,000 sq ft (8,360 sq m) project began on Monday, with excavators and construction workers tearing out portions of the East Wing.
As construction begins on President Donald T
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