The only right he has is to go back across the Border and never come back.
A group should get together and rent a billboard near a border crossing, displaying the relevant laws being broken and the attendent penalties. Not that they don’t already know, but just to make it clear that Americans don’t take their illegal activity lightly. Also, billboards showing the increase in formerly unheard-of diseases in the US, such as leprosy, and crime statistics by illegals, like drunk drivng deaths and rape.
We need a few apps for what citizen-slaves are still allowed to do, while being interrogated in the primary line and through various checkpoints, groped and irradiated by the mailroom clerks in uniforms, drones pointed at our houses for spying purposes, etc.