Quote from @Alex Silang:
There are 11 million undocumented immigrants in the United States. If even just a quarter of them are removed, don't you think it would greatly affect housing markets? That'd be 2-3 million people not needing housing in the US any longer.
The country has massive debts and deficits. Our federal government, operationally does not function very effectively and certainly not efficiently. The cost to remove just one illegal will be in the thousands and way the government operates probably 100's of thousands of dollars. I don't see any possible way to accomplish this goal. The last Trump administration was much more show and bluster than it was effective at implementing policy. They successful cut taxes and loosened IRS enforcement. That was accomplished with the stroke of a pen. They unleashed pandemic handouts and loan programs that greased the economy (this was not well thought out, contributed to the inflationary environment we are still suffering from and PPP and ERP loans were flooded with fraudulent loans and benefits)
These programs leveraged existing corporate infrastructure (banks and the government had little or no operational involvement). The big difference here is some federal state or local agencies will have to be redeployed to take on this task creating a lack of services in the areas they were already operating. This will create more costs. Apprehended illegals will still be afforded due process (I presume since this is constitutionally protected for everyone in the United States). Anything requiring court or judicial decisioning is extremely slow. So we will be housing feeding and detaining millions of people for well beyond the Trump presidency. I suspect this is mostly campaign rhetoric that was popular with the current anti immigrant xenophobia that grew out of the pandemic both here and internationally and won the election, but the governments ability to achieve any real change in the population of illegals in this country would be very out of character. There will be some showy roundup of few immigrants (most likely only in Blue State, because every act of both parties right now is to be punitive to the citizens of the states that oppose the current administration), they will go after people with removal orders already in place, have a couple of press conferences and go back to improving their own personal economic situations. I hope I am wrong, but the above scenario more closely fits how the government operated in Trump first 4 years.
PS before you dismiss this as liberal, communist, socialist talk. I am not a democrat, just a realist. I often think we forgot we the voters are responsible for all of this. We elected Trump the first time, elected Biden to relieve ourselves of the chaos of his first presidency and now reelected him because he promised he would lower the cost of eggs by pumping more oil. The binary choice was not a good one, but I wouldn't anticipate some remarkable improvement of fiscal responsibility or operational efficiency in this second act.