According to the article, the over 200 Venezuelans sent to CECOT (252 total prisoners - you can find other articles that state all are Venezuelan) were transferred to Venezuela and some people incarcerated in Venezuela - 10 Americans and an unspecified number of political prisoners - were exchanged.
According to NILC, there were at least 280 people sent from the US to CECOT so not all people have been released.
According to the article, the over 200 Venezuelans sent to CECOT (252 total prisoners - you can find other articles that state all are Venezuelan) were transferred to Venezuela and some people incarcerated in Venezuela - 10 Americans and an unspecified number of political prisoners - were exchanged.
According to NILC, there were at least 280 people sent from the US to CECOT so not all people have been released.