Judges can’t rule without a case in front of them. The cases are filed by those who are against Trump’s policies. To get a case in front of a non-liberal judge you’d have to have somebody file suit in a different court saying they are harmed by the Trump administration obeying the other judge’s order. But it takes time to file those lawsuits, and by the time that was done an appeals court will most likely hear the original case anyway.
“Judges can’t rule without a case in front of them”
Are you sure? It seems every one of these judges IMMEDIATELY rules as soon as Trump does something, with no time given for someone to submit a case, these judges seem to be acting on their own