Subject: Re: Trump must destroy the judiciary
Isn't that akin to a "slap" suit? Those are illegal in many states (though not all, and I don't think at the federal level).

Almost certainly not. The Administration isn't the one filing suit in these situations, for the most part. They are adopting and implementing policies, and the targets of those policies have to run into court. Those targets still suffer the consequences of both the uncertainty caused by the policies and the costs of litigation, but since the suit is theirs, they would never be "slap" suits.