President Donald Trump has added a new architectural firm to his $300 million ballroom construction project at the White House. A White House spokesperson said Thursday that the firm, Shalom Baranes of Washington, D.C., was needed because the project is moving into a new stage. Earlier Thursday, the Trump-appointed chairman of a federal commission with jurisdiction over construction to federal buildings said he expected the White House to submit the ballroom plans this month for review. The new firm has worked on the Pentagon and Treasury buildings, among other federal properties. The initial firm, McCrery Architects, remains as a consultant.