Washington (CNN) President Donald Trump oversees a toxic West Wing and attempts to use his office to settle scores -- including with the state of California and former Vice President Joe Biden -- according to a new book by an anonymous author identified only as a senior administration official.

Painting the White House as a snake-pit of D-list opportunists, the unnamed writer claims Trump oversees a shambolic operation where staffers are out mainly for themselves. The President, the unnamed author known as "Anonymous" writes, is equally amoral, using the power of the presidency for political gain and ignoring attempts by his aides to moderate his approach.

"No external force can ameliorate his attraction to wrongdoing," the author writes in the forthcoming book "A Warning," excerpts of which were obtained by CNN on Monday.

"The net effect of the president's war on democratic institutions is that he has turned the government of the United States into one of his companies," Anonymous says, "a badly managed enterprise defined by a sociopathic personality in the c-suite, rife with infighting, embroiled in lawsuits, falling deeper into debt, allergic to internal and external criticism, open to shady side deals, operating with limited oversight, and servicing its self-absorbed owner at the expense of its customers."

The claims made in book echo what ousted officials have said publicly and what Democrats are currently probing in their impeachment efforts. The description of an administration in chaos is recounted in sworn testimony from several named witnesses in the inquiry.

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