Gorsuch voted with the conservatives on the Census case. Roberts delivered the majority. But you're mad at Gorsuch for wearing a purple tie and therefore he must be part of the illuminati or something? Yikes...  I believe the citizen question should be mandatory because so much of funding and congressional seats depends on who are citizens and who are not citizens.  No, under the Constitution, congressional representation is based on the number of "persons," not "citizens." Even the Trump administration was not trying to argue it could exclude non-citizens from representation. They were (totally implausibly) arguing they needed to count non-citizens to better protect minority voting rights. Of course, the real reason was to scare enough non-citizens into not filling out the Census that Republicans could gain an artificial political advantage.