My initial reaction after reading it through is not optimistic, though I don't think the taxpayer standing principle as a whole is in jeopardy. Justice Kennedy's concern that allowing suits like this one would amount to an "intrusive" control over the Executive branch is most concerning and makes me think he may join Alito, Roberts and presumably Thomas and Scalia (though Justice Scalia seemed to find the line-drawing on both sides preposterous.) in finding a way to deny standing in this case. The question is what kind of line will they draw to accomplish it?