The claim that there are no concentration camps in America is misleading because it depends on the definition and historical context of 'concentration camps'; while the U.S. Government repudiated the term for WWII Japanese American internment camps, some experts and sources argue that both historical and recent detention facilities meet criteria of concentration camps.
There are no concentration camps in America

Incarceration & Concentration Camps - Jails, Prisons & Incarceration (U.S. National Park Service)
Source: nps.gov
Key Evidence
The Japanese American National Museum documents WWII internment as concentration camps based on mass incarceration without trial.
janm.orgjanm.orgAmerica's Concentration Camps
Congresswoman Ocasio-Cortez and other commentators identify recent border detention centers as concentration camps under broader definitions.
valdaiclub.comvaldaiclub.comAre There Concentration Camps in the United States?
cambridge.orgcambridge.orgConcentration Camps in Trump’s America? (Chapter 11)
A government investigation repudiated calling WWII internment camps 'concentration camps,' highlighting differences from Nazi camps but not denying mass incarceration occurred.
trib.comtrib.comThere were no concentration camps in America
What the Evidence Shows
Historically, during World War II, the U.S. Government forcibly relocated and incarcerated over 120,000 Japanese Americans in camps often described by reputable institutions such as the Japanese American National Museum and Densho as 'concentration camps.' These camps involved mass incarceration without charge or trial based solely on race. The U.S. National Park Service also uses the term 'incarceration camp' and discusses the Japanese American confinement experience.nps.govnps.govIncarceration & Concentration Camps
janm.orgjanm.orgAmerica's Concentration Camps+1 more
However, some sources, including an opinion piece from trib.com, emphasize that these WWII camps were not concentration camps in the sense of Nazi extermination camps, noting no starvation or systematic murder occurred and that a government investigation in the 1980s repudiated the use of 'concentration camp' for these sites.trib.comtrib.comThere were no concentration camps in America
More recently, political figures like Congresswoman Alexandria Ocasio-Cortez have described detention centers at the U.S. Southern border as 'concentration camps'.cambridge.orgcambridge.orgConcentration Camps in Trump’s America? (Chapter 11) The Outline and Valdai Club articles argue that these facilities meet criteria for concentration camps due to mass detention without trial under harsh conditions.
theoutline.comtheoutline.comThere are concentration camps in America+1 more
The debate largely hinges on definitions: traditional Holocaust-era concentration camps involved systematic extermination, while other definitions focus on mass detention without due process. Some sources argue for a broader historical understanding of concentration camps that includes U.S. Internment and recent detention centers.
Therefore, saying 'there are no concentration camps in America' ignores both historical facts about WWII internment camps and contemporary debates about detention centers. The term's application is contested but supported by multiple credible sources when using a broader definition.