To begin with, our borders have been porous for decades.
Obviously, the problem is greatest along our Southern border, but it’s not restricted to that part of the country.
In fact, because we don’t do a very good job of tracking who comes in and out of the country as visitors, large numbers avoid immigration laws simply by overstaying their visas.
The result is an estimated 11 million undocumented immigrants in the United States.
The overwhelming majority of these men and women are simply seeking a better life for themselves and their children.
Many settle in low-wage sectors of the economy; they work hard, they save, they stay out of trouble.
But, because they live in the shadows, they’re vulnerable to unscrupulous businesses who pay them less than the minimum wage or violate worker safety rules, thereby putting companies who follow those rules, and Americans who rightly demand the minimum wage or overtime, at an unfair disadvantage.
Crimes go unreported as victims and witnesses fear coming forward. And this makes it harder for the police to catch violent criminals and keep neighborhoods safe, and billions in tax revenue are lost each year because many undocumented workers are paid under the table.
More fundamentally, the presence of so many illegal immigrants makes a mockery of all those who are going through the process of immigrating legally.
Indeed, after years of patchwork fixes and ill-conceived revisions, the legal immigration system is as broken as the borders.
Backlogs and bureaucracy means the process can take years.
While an applicant waits for approval, he or she is often forbidden from visiting the United States, which means even husbands and wives may be forced to spend many years apart.