All the Sheriff would do is kick them out of his County while saying that if the Feds don't want to enforce the immigration laws, he is not going to allow the illegal aliens in his County. In other words, he is going to enforce the immigration laws in his County whether the Feds like it or not.
The local officials who support him would say that they are not going to demand that the citizens of the County pay for laws that are not being enforced in the rest of the nation.
The County Treasurer would say that there will be no need to raise taxes because the Sheriff has removed the illegal aliens from the County. By doing so he has cut the costs of schools, jail detentions, court costs, medical care, welfare and crime. (Neat, huh?)
It wouldn't take long before the cities would follow along because they would be getting phone calls asking why they are not supporting the Sheriff in reducing costs. The city police would be told to follow the sheriffs example. Then the surrounding counties would start to see the benefits to this cleaning of illegals.
Legal immigrants would be encouraged to come to the County to fill in the empty employment spaces. Just make sure to have their green cards or other documents showing that they are in the US legally.
Some legals are worse than illegals. Around here we have people taking advantage of the sponsor system which allows an immigrant to bring in another immigrant (legally) if the sponsor makes at least 125% over the federal poverty level (which isn't much). Then to get their new immigrant on SSI and welfare it's very easy because they only have to combine the sponsor's income with their immigrant's income (often $0) when determining eligibility for welfare programs. To me those are worse than the people who aren't taking any government programs, leaving their families behind in Mexico and working for every dime they make.
The other legal immigration we see a lot of is someone getting a visitor's pass when they're 9 months pregnant and heading over to the county hospital and then getting US citizenship for their new welfare baby. They technically don't have to be illegal to do this because they hand out citizenship too easily to foreigners who come just for that purpose.
Should the sheriff inforce his own immigration laws, what would he do with the illegals?