I doubt that he will deport these people.
I fully expect him to build a physical barrier on the border, and I fully expect him to aggressively deport felons, and I expect he will allow the immigration agents to do their jobs aggressively.
If he will just do what he has said he will do, this problem will be largely resolved by the time he leaves office.
No, just doing that will leave 20-30 million Democrat voters here to permanently change our country—both by dragging it down in costs and skill level and pulling us inescapably to the left.
He never said he was going to deport all of them. Now the question is how is this resolved in a way that will not create additional incentives to come illegally.
IMHO: This is how it should go.
1) Secure the border.
2) Fully implement E-Verify
3) Remove all convicted illegal aliens and all convicted legal aliens who are subject to removal through an expedited process.
4) For all non criminal aliens who entered illegally or overstayed a legal visa offer two separate programs.
Program A: For aliens who just want to work here and eventually go home. Offer a low cost expiated process to adjust their status to that of a 'non-immigrant' guest worker. Under this status there is no pathway to becoming a lawfully admitted permanent resident alien (LAPER) or a pathway to US Citizenship.
Program B: For those aliens who have been here for a long time and have demonstrated good moral conduct and are not nor likely to become a public charge. They may submit an application to adjust their status to that of a Permanent resident.
This will not be an expedited or inexpensive process. In addition to a high application fee for processing, they will be required to pay any and all back taxes before their application can be approved. They would not be able to nationalize for a period of 10 years after their legal status is approved.
If we structured it this way I believe 70% of the aliens would opt for the non-immigrant expedited worker visa.