The concept is well defined, but the rules seem to be constantly changing. Generally in the direction of "no standing" for those whose interest, real though it is, is general rather than specific. It wasn't always that way.
They find "standing" for non-citizen, non-resident, aliens captured on the battlefield, but not for US citizens wishing to see that the Constitution be enforced?
That sticks in a lot of craws. Mine included.
Then get yourself detained on the battlefield and push for discovery.