Conditional disagreement.
Actual mass deportation won't be feasible but they can lock millions of people in private for-profit prisons, convict them of being in the USA illegally, and then the penal labour exemption to the 13th amendment applies: they become a huge pool of (legal) slave labour. Slaves exert a downward pressure on employee wages, provide profits for the "corrections" industry, and give the MAGAts a demographic to look down on while the bosses pick their pockets.