Amazon, Microsoft and T-Mobile, all headquartered in the Seattle area, have donated to President Donald Trump’s new ballroom at the White House, according to a list of donors.

The list, shared by The White House on Thursday, has around 40 donors, including companies, foundations and individuals. It doesn’t include the amounts of their contributions to the construction of Trump’s ballroom, which is projected to cost $300 million.

Trump’s White House alteration centers on building a ballroom in the East Wing. Construction, which includes demolishing part of the historic building, began this week after an initial announcement in July.

The renovation is expected to finish before Trump’s second term wraps in January 2029.

Redmond-based Microsoft said Thursday that the renovation is not only

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