from the linked article...
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The chief financial officer of Donald Trump's company, Allen Weisselberg, pleaded guilty to tax violations Thursday in a deal that would require him to testify about illicit business practices at the Trump Organization.
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Link: https://www.nbcnewyork.com/news/national-international/trump-cfo-allen-weisselbergs-plea-deal-could-make-him-a-prosecution-witness/3829839/