"The reality is that of 238 migrants — mostly Venezuelan — that officials accused of belonging to the Tren de Aragua gang and expelled to the Central American country in mid-March, just a small fraction had ever been charged with serious crimes in the US.
Hundreds of pages of US legal records and American government statements reviewed by Bloomberg News found five men charged with or convicted of felony assault or firearms violations. Three men were charged with misdemeanors including harassment and petty theft. Two others were charged with human smuggling.
For the rest of the men, there was no available information showing they committed any crime other than traffic or immigration violations in the US.
(...)
The findings raise questions about how the Trump administration determined that the migrants sent to El Salvador were violent criminals. The US maintains that all of the Venezuelans on the flights had committed a crime because they were in the country illegally, a senior official with the Department of Homeland Security said in an email. The official said many of the men who lacked US records were nonetheless terrorists, human-rights abusers or gangsters.
Many of the men allegedly associated with Tren de Aragua were deported under the rarely used Alien Enemies Act of 1798 without court review."
https://www.bloomberg.com/news/articles/2025-04-09/about-90-of-migrants-sent-to-salvador-lacked-us-criminal-record