“How can I return him to the United States? Am I going to smuggle him? Of course I’m not going to do it,” Bukele said while sitting beside President Donald Trump. “The question is preposterous.”
Ideally you would return him because the president of the United States asked you to, but I suppose Trump doesn't think the Supreme Court's ruling that the US government needs to "facilitate" Garcia’s return requires such an extraordinary level of effort.
Trump is aware of that, he's given ICE access to that information to help track them down.