First put out an illegal immigrant hotline that reaches I.C.E. directly, for all US citizens to call and report the whereabouts of illegal aliens.
Ex: 1-888-GET-LOST.
(We could transfer all of those IRS agents, that the Biden administration hired, to the I.C.E. switchboards to take calls.)
Then when a US citizen gives good Intel that leads I.C.E. to a capture, said good citizen receives $200. $200 per illegal they help capture, either in money on a gift card, or credit on their taxes.