The access of private data between different agencies (or whatever) across executive can be (and probably) illegal. And if this access will be considered such i

The access of private data between different agencies (or whatever) across executive can be (and probably) illegal. And if this access will be considered such it would be impossible to revert. On other hand we have government trying to do something, and their potential harm is delay their plans until courts will consider the case. You need to compare not only immediate harms, but more importantly potential harms of the emergency order in case if final decision differs from (assumed) emergency one. You also make merits question to be very straightforward but it’s not – other courts ruled plaintiffs have good chances to succeed on merits. I think the balancing act here is clear.