Right now I think these measures are extremely effective, especially at deterrence and I do not see what your arguments against this being an effective deterrence really is. One good step from the legislative would be removing the legal basis for the civil rights lawsuits, so they can be thrown out immediately.
You mean the Constitution's 5th Amendment? No thank you, I'll keep that one around.
> Sure, if you can think of better deterrents for migration and better ways to deport more people, then those should be tried as well.
A little known fact is that the Constitution is actually meant to make life difficult for the government. It is not up to the rest of us to come up with Constitutionally valid alternatives to the administration's preferred course of action. That's their job.
One idea which should be explored, both in the US and the EU, is that all lawsuits against immigration decisions have to be paid, either ongoing or up front, by the person who would be affected by the immigration enforcement.
Given that the topic is US immigration policy it sure seems like it is relevant.
And that the US populous not only despises these people, but people from both sides of the political spectrum actually want the opposite types as immigrants.
(You are talking about deterring from legal immigration as you have explained in a sibling comment as well, and I am recommending outlawing legal immigration)
I am not against immigration. Though I am not for illegal immigration, nor do I see the need to spend so much money and energy on deportations, while destroying innocent lives, where a standard border many countries maintain every day would suffice.