The 9/11 attacks significantly changed the perception of the American Dream, revealing how the United States shifted from a welcoming society for immigrants and highlighting the deep impacts of this tragic event. This research digs into the myths and realities about the American Dream while applying a qualitative approach to analyze it. Key events and movements have significantly shaped public perception and introduced new interpretations with the passage of time. The research article examines the evolution of the American Dream alongside concepts of American exceptionalism as expressed by Alexis De Tocqueville, Manifest Destiny, multiculturalism, and cultural practices, which bring Diversity in the USA. In light of the above discussion, it also investigates the political, economic, and social repercussions of 9/11 on the very essence of the American Dream and how the Trump Administration’s policies have redefined the aspirations associated with the American Dream for other individuals seeking to attain this ideal.