The 22,000-square-foot ballroom, designed to accommodate 1,000 people, is part of a larger East Wing complex that includes offices for the First Lady and a new movie theatre.
A commission member have raised concerns that the addition's height could overwhelm the historic White House, though the architect stated changes were 'possible'.
The project faces controversy, including a lawsuit from the National Trust for Historic Preservation alleging construction began without proper approvals and accusations of potential influence-peddling due to corporate donors.
The National Capital Planning Commission is scheduled to vote on the project on 5 March, with officials aiming for fast-track approval to begin construction in April.