There would be far fewer clean houses, far fewer women wiling to do childcare, and very few clean office buildings. Many crops would probably rot in the fields because few native born Americans are willing to work for hours in the blazing sun at minimal wages. Few of the angry Trump supporters are willing to take the jobs done by Latinos, legal and illegal.  They prefer to collect their welfare checks.  Those who are working in this country do not collect welfare, although  pervasive lies about this were spread by the Trump camp. 

 Every person I see who is doing lawn and garden work,  who are doing the nastier and/or more dangerous jobs - roofing, raking hot tar on roads in the summer heat, etc, are all Latinos.  Those who want them all deported will probably be the first to complain when they see what happens if all 11 million are deported.   As the saying goes, be careful what you wish for.

Work instead to promote amnesty and REAL immigration reform. A wall is not a policy.