As you are probably aware, in most circumstances and for most categories of handouts, illegal immigrants in the United States do not qualify for welfare benefits. As I’m using it here, the term “welfare” does not include Social Security or Medicare, which are not restricted by income status; but the term “welfare” does include all of the large number of what are called “means-tested” programs, which in the aggregate consume nearly $1 trillion annually of federal spending (and well over $1 trillion if state contributions are included). The biggest of the “means tested” programs are Medicaid, SNAP (“food stamps”), and...