Former White House press secretary Karine Jean-Pierre has accused a senior adviser in President Joe Biden's administration, identified by sources as Anita Dunn, of exhibiting racist behavior and attempting to undermine her during her tenure. In her new book, Jean-Pierre claims that Dunn treated her and other women of color more harshly than white colleagues, and tried to prevent her from accompanying the president on key trips. These allegations have sparked debate among former staffers, with some defending Dunn and crediting her for supporting Jean-Pierre's rise, while others suggest performance issues were at play. Jean-Pierre also alleges that Dunn was behind negative press coverage aimed at her, but Dunn has not responded to these claims. Meanwhile, President Biden has completed his cancer treatment and was recently seen traveling by train with his family.