It would help to discuss this using the same terms. This is not different from the "due process" that others talk about. I would presume you don't think that due process is needlessly obstructive but you also seem to think this obstruction is needless. If I'm wrong, what am I wrong about? If I'm not wrong, why do you think this obstruction is needless?
For example, someone who allegedly beat their wife, has a right to a trial. But if activist judges make decisions that cause the trial to not take place for 10 years that is obstructive and the alleged victim doesn't get justice or protection from future assaults. So if that person is deported before the trial you could complain about lack of "due process" but you would be ignoring the rights of the victim.
This case is particularly egregious, as the judge personally helped a violent illegal immigrant evade law enforcement outside of her jurisdiction, which explains the arrest; but "systematic obstruction" refers to the injunctions being issued constantly to block executive actions, suggesting that the Trump administration's attempts to reverse open border policies are subjected to a much higher standard than Democrats were under Obama just 15 years prior when they correctly viewed illegal immigration as a problem.
The last time the Alien Enemies Act was invoked was about two decades before Barack Obama was born.
> If it's practically impossible to reverse open border policies that let in a flood of illegal immigrants for almost 4 years
The US hasn't had anything like open borders policies for more than a century (more precisely, since the original national origin quota system was adopted in 1921.)
It's probably easier to discuss policy in this area if the premises are something resembling facts rather than partisan propaganda fictions.