If Eisenhower could do it...
In 1954, responding to an alarming explosion of illegal immigration from Mexico, President Eisenhower authorized his INS Commissioner, Gen. Joseph Swing, to launch a massive deportation operation called Operation Wetback. Though the operation employed as few as 700 to 1075 Border Patrol officers, it resulted in the repatriation of between 700,000 and 1,300,000 Mexican nationals. This was accomplished in one year.
Just a little history lesson for those naysayers who claim that it is not possible to deport, or to encourage the self-deportation of, the several million illegal immigrants currently occupying US soil. Where there is a will, there is a way, but apparently American politicians have lost the will of those members of the greatest generation.