OP was claiming that this article offers proof that Frontex is systematically breaking the law and that's what I was responding to. I am not familiar with all

OP was claiming that this article offers proof that Frontex is systematically breaking the law and that's what I was responding to. I am not familiar with all the wrongdoings that Frontex allgedly participates in, nor am I particularly interested in that topic. If they're doing illegal things, there should be no problems suing them, supreme courts or not. There's one thing that I'd like to address though: you said that Frontex wants to control the border(s) without helping migrants. The latter is not part of the mandate of any border protection agency that I know of, so it's no wonder they won't want to invest money into it.