system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can a ruling in a Washington state court overrule executive action?
gpt
It was not a Washington State court. It was a Federal Judge who lives in Washington State. There is a very big difference. 

As to how the Federal Judge can overrule an executive order? That is one of the purposes of Federal Judges and the Judicial Branch's check and balance against the Executive.