ICE should run commercials in sanctuary cities offering rewards, anonymity, and an 800 number to call for dropping the dime on the employers of illegal aliens. ICE should drastically scale up workplace raids and prosecutions of employers. Furthermore the families of those illegal alien workers should be tracked down in their homes and schools, arrested, and deported as well.
DHS can announce that, effective immediately, any employer that hires illegal aliens is subject to a $1M/day/employee fine. Use DeathCare definition of employee- 20 hrs./week. Jobs would be limited to picking crops and mowing lawns.
Then, stand aside as the illegals run home.