Who in America is willing to work 100 hours a week without getting paid for those brutally long hours (not to mention without the time-and-a-half pay required for overtime)? The answer should be, “no one.” But for undocumented immigrants, who don’t have the right to take above-board, normal jobs, almost any job, no matter how abusive or how low the pay, is better than nothing—especially if they owe debts to criminal smugglers who know where their families live.

According to the New York Times, fourteen 7-Eleven franchises have been charged with raking in $180 million since 2000 in illegal profits from underpaying employees, and another 40 franchises are under investigation. Employees who should have been paid as much as $1000 a week were paid only $300-$500 while being forced to live in unregulated, substandard boardinghouses operated by the stores’ owners.

It took 13 years for an employee to finally complain about wage theft and call in the authorities to break up the illegal operation. That’s a good measure of the fear and intimidation that keeps the undocumented in the shadows and lets greedy employers get away with paying sweatshop wages.

Clearly, legalization of the undocumented will improve the labor market in the United States by bringing abused workers out of the shadows and starting the process of lifting wages. However, this will work better and faster if Congress also provides the right enforcement resources, including the Labor Department wage and hour inspectors and attorneys needed to investigate and prosecute cheating businesses and the criminals who run them. The U.S. spends $18 billion a year on border security and immigration enforcement, and will spend even more if the Senate’s proposed comprehensive immigration law, S.744, is enacted. It seems clear to me that some of those funds should be redirected to the Labor Department and its never-ending battle against wage theft and exploitation.