Boyd Gaming paid Dole's firm $180,000 in 2016 to advocate for the company in Congress on legislation affecting Native American tribes, hotels and casinos.
Senate disclosure forms show Dole also lobbied last year for the National Association for Home Care & Hospice and Bridgepoint Education, a for-profit education company, for a total of $230,000.
Dole, a former Republican presidential nominee, will continue to advise Trump and in an "unofficial" role, but "not as an official part of the transition," Spicer said.
Spicer said Dole "has been tremendously gracious with his time and counsel and guidance. We appreciate his continued support. ... That was my fault for getting ahead of what we thought was his addition to the team."
(Kumar reported from New York. Vera Bergengruen contributed to this report.)
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