The important thing to ask is how many of those were (or were not) taxpayers with job, how many were parents (or children) of American citizens, how many were students (who arguably could get a student visa and be an official foreign student rather than student who is a foreigner without the proper visa)? For the people doing the deporting, it is much easier to deport otherwise law abiding, hard working “illegals”, rather than drug dealers, smugglers, gang members, terrorists, prostitutes, thieves and the like since the later group put up a bigger fight.