This is a widely misunderstood area of the law. There are hundreds of thousands of world visitors who come to Vegas to gamble and have a good time. Any winnings they have are subject to a backup withholding percentage of 30% to make sure any tax liability is covered. In order to facilitate this, the IRS issues a ITIN (Individual Identification Tax Numbers). These numbers allow illegals to file tax returns and ensure the proper tax withholdings are in place. In the example of Vegas, there are people not American playing who win big. The question comes as to whether their country of origin has a tax treaty with the United States. The US has a tax treaty with Canada. Canadians are issued the W-2G form and sent on their way. They have the right to file a 1040-NR to claim a return on the amount on money that was withheld from them by the casino and remitted to the IRS. The IRS systems don't talk to other federal systems, with the exception of Social Security Systems. I know about the 1040-NR because my spouse's Aunt was living in Alberta and paid $4,000 in backup withholding from her winnings. I'm a tax accountant and I filed the return for her and she was able to collect her winnings in their entirety. That's the short-version of the answer. Illegals pay many taxes that most unsophisticated Americans who don't understand. I've been doing taxes and auditing for 30 years, and you'd be surprised by the questions that we see coming up all the time. The one thing that is a hot button issue for me is the claim that they're here mooching off us, and we're paying all this out and they're paying nothing in. Its simply not true. They may be illegal, but they are a functioning part of the economy. They have kids, families, they work, they have kids in schools, they go to church, and they fit in with local communities. The accusation is raised that illegals are a NET DRAIN on the US Economy. There is no concrete data to prove that out. If they're working, paying taxes, supporting the local economy, and they make it their home for years and years, chances are they're either breaking even or they're overpaying their fair share. That is not me being "pro-illegal-immigrant." I seriously had some moron telling me I was "buying in" to the "illegal alien lobby." Imagine my shock when I asked him the address and phone number of that lobby. There are estimates and our intelligence on the subject is sharpening all the time. But honestly, the big area illegals hit is healthcare. And that is not as portrayed by Joy whatever her last name was. That bitch has so many lies coming out her ass she could stink out the Washington Mall. She claims illegals are making $3,500 roughly and living it up on the high hog we call US government funds. Again, this number is a complete bullshit lie. There is a program within Social Security that covers those applying for refugee status, asylum seekers, and the disabled who never paid into the system. That amount is $994 per adult individual, and $1,491 for a couple. They do receive SNAP benefits, and they do have access to Medicaid and section 8 for housing. Consider this, you have people begging you to take them in because they come from a land with mass genocide and are in real danger. They're the refugees. Then take the asylum seekers, and these include foreign scientists, former leaders, and others in that type of position that could be useful to America, they'll have those benefits for a short period of time. I see people bitch about this, but seriously. The America First circa 2016 has gotten tired of arguing this. When you have a family from Vietnam, Ukraine, and any other of countries where there are atrocities are going on coming to the United States, their cases have to be given judicial review. So the question is, what do you do with them when they've been let in. they have nothing to their name and need to get squared away and given the chance to start a new life. They obtain legal status and they are then transitioning to be self-reliant. They phase off social benefits. People have needs, for some strange reason, they have to take a shit just live the rest of the world. Accepting refugees or asylum seekers, is a humanitarian thing. That won't go over well with America First. Seriously, think about it, we can be America First, but one of the best atributes about America is our kind and generous citizenry. Those people coming here from other lands find that there is no place like America. The social safety net program amounts that are used to set up refugees and asylum seekers initially keep them from being homeless. Many have families and have barely the clothes on their backs. My husband's family were all Vietnam refugees from the war. They came to the US legally and they made good. Working hard as most Asians tend to do, they amassed an impressive sum. People who come to this country legally, become citizens or remain resident Aliens have faced hardships that many Americans could only imagine on a TV movie. The only difference is the exact story is worse and inappropriate to televise. As much as we pursue illegals, we need to be aware that those here legally are covered by most of the constitution. They have the same right to due process. Those who are all in favor of deporting and denaturalizing any citizen or resident alien is insane and bigoted. Everyone traces back to an immigrant in the past 300 years. Read what the Statue of Liberty states in her book. Most people don't know it.