I have questions:
How will making them go back and get in line be enforced?
How long will it take to make them go back?
How will they get there and who will pay for getting them there?
If we have to pay for all of the above, does it make any sense to bother making them go back?
Because after all the trouble and expense on our part, there will be a door in the wall.
It will be cheaper just to leave them here ... right?
Conclusion: Amnesty.
There ARE questions to be asked about Trump's plan, and you've missed every one.
As for yours, I'll take the 1st & 5th - I don't have time to respond to SIX silly questions:
How will making them go back and get in line be enforced?
This is most of the substance of Trump's paper. Among other things: (These are the HEADINGS of discussions of actions Trump's paper proposes)
"Triple the number of ICE officers." "Nationwide e-verify." (You may not like it, but it WOULD be effective.) "Mandatory return of all criminal aliens." (These are people in custody - it's a lot cheaper to ship 'em home than keep them jailed.) "Defund sanctuary cities. " "Enhanced penalties for overstaying a visa." "Cooperate with local gang task forces." "End birthright citizenship." "Increase prevailing wage for H-1Bs." (This needs further detail, but the idea is correct.) "Requirement to hire American workers first." "End welfare abuse." (by immigrants)
Following, and to answer your 5th "question", Because after all the trouble and expense on our part, there will be a door in the wall.
Here is the full text following the final heading in Trump's paper heading, emphasis by myself:
"Immigration moderation." "Before any new green cards are issued to foreign workers abroad, there will be a pause where employers will have to hire from the domestic pool of unemployed immigrant and native workers. This will help reverse women's plummeting workplace participation rate, grow wages, and allow record immigration levels to subside to more moderate historical averages."
If the intent in all that is not clear, then likely no one can help you. OTOH, if you can approach it unbiased, Trump's paper goes into considerably more detail: Read it.