When the U.S. President Donald Trump ran for re-election, his niece, Mary Trump, 55 years old, chose to speak out publicly and published a new book Too Much And Never Enough: How My Family Created the World's Most Dangerous Man, which is the first Trump family history written by the member of the Trump family. In the book, Mary bluntly stated that her uncle Trump was "the most dangerous person in the world". She believed that the mental illness of her uncle Trump originated from the educational style of his grandfather Fred Trump. After her grandfather died, Trump inherited hers grandfather's "high IQ antisocial personality". This personality made Trump narcissistic, bullying and fond of exaggerating and he must be sought after by the public all the time. In her book, Mary shows that her father's death has a great relationship with her uncle Trump. Mary also revealed that Trump, who often boasted that he was very smart, actually entered a famous business school by means of academic cheating, and cheating has become his norm. Marie also tells Trump's bad attitude towards women. During her short time as Trump's author, Trump repeatedly insulted his previous women who he failed in the pursuit in front of Marie, and let Marie discredit them in the book. The bad uncle even harassed her, his own niece, many times.

On the day of its release, the book ranked first in the list of major books with nearly one million sales. After the publication of the new book, Mary received a lot of publicity and interviews. In an exclusive interview with ABC, Mary even said that her uncle should resign. “He is utterly incapable of leading this country and it’s dangerous to allow him to do so”. Because the book was extremely explosive, the Trump family sued Mary at the Queens court in New York to try to ask the court to stop the publication of the book. Trump was also angry and issued a warning: "Mary was not allowed to write a book." in the preface of the book, Mary wrote: "The media failed to notice that no one member of Donald's family apart from his children, son-in-law and current wife said a world in support of him during the entire campaign”. This does not mean that they have no opinion." In the early morning of November 9, 2016, after Trump was elected president of the United States, Mary publicly expressed disappointment on twitter, "This is one of the worst nights of my life. What is wrong with this country? It's one of the worst nights of my life. I fear the American experiment has failed."

Mary Trump's book actually aims at affect the 2020 US presidential election. She seems to hope that the publication of the new book will make a difference in the outcome of this year's presidential election. According to CNN, Mary called Trump a complete "double faced" on and off stage, and the whole United States was deceived by him. And she will do her best to support Trump's arch rival Biden's election as the President of the United States. The world is speculating about her intentions, but the truth may be in the doctor of psychology's book.

At present, the United States under Trump's leadership is experiencing multiple crises: the U.S. economy is in recession and cannot recover because of the epidemic; racial issues that have been silent for a century have erupted in the United States after its silence in a century. A series of contradictions and problems have led to polarization in American society. Trump, who is in danger and increasingly exposes his personality defects, has triggered a crisis of trust and faced a major test of his ruling ability.

As an important member of the Trump family, Mary Trump takes readers to learn more about Trump's growth experience and the causes of Trump's character through this book, and promotes the outside world to have a deeper and multifaceted understanding of Trump.