America in Vietnam is a book by Guenter Lewy about America's role in the Vietnam War. The book is highly influential although it has remained controversial even decades after its publication. Lewy contends that the US actions in Vietnam had been neither illegal nor immoral and that tales of American atrocities were greatly exaggerated in what he understands as a "veritable industry" of war crimes allegations.
The text returned to the limelight during the 2004 US presidential election, when it was cited by several groups supporting the reelection of George W. Bush, in contending that Democratic presidential contender John Kerry had betrayed his country for his participation in anti-war activities upon his return from service in Vietnam.