When Betsy DeVos was questioned by the Senate Health, Education, Labor, and Pensuons Committee, her financial disclosure forms had not been completed, so the Senators were uninformed in the extent of her conflicts of interest.

The Center for American Progress reviewed the documents, too late to make a difference, so that the public would be informed. It is not clear whether she will divest any of her holdings or whether anyone even cares. In the Trump era, ethics rules seem to have been suspended.

https://www.americanprogress.org/issues/education/news/2017/01/27/297572/inside-the-financial-holdings-of-billionaire-betsy-devos/