Writing for the Majority (5-4): Chief Justice John G. Roberts Jr. said the explanation offered by the Trump administration for adding the question “appears to have been contrived.” Justice John Roberts did leave open the possibility of change if the Administration could provide an adequate answer.
Executive branch officials must “offer genuine justifications for important decisions, reasons that can be scrutinized by courts and the interested public. Accepting contrived reasons would defeat the purpose of the enterprise. If judicial review is to be more than an empty ritual, it must demand something better than the explanation offered for the action taken in this case.”
USA Today has a good version of the SCOTUS decision. John Roberts and the liberal block rule against 2020 census citizenship question (for now) handing Trump administration a major defeat. Others have said there will probably not be another submission to SCOTUS on the Citizenship question. The only one who might change their “yea” vote would be Roberts if a reasonable answer was supplied by the Administration.