He had used up his appeals...
https://www.msn.com/en-us/news/us/venezuelan-migrant-recently-deported-to-el-salvador-had-final-order-of-removal/ar-AA1C4yig
...Escalona, who entered the U.S. on May 14 and requested asylum, filed a sworn declaration in early March in which he stated that he was not a gang member and asked the government not to send him to Guantanamo.
"I believe that I am at risk of being transferred because I have a final order of deportation and am from Venezuela," Escalona said in the sworn declaration. "I also believe that I am going to be transferred to Guantanamo because of my tattoos, even though they have nothing to do with gangs. I have twenty tattoos."