I hate to say it, but this data isn't very good either. First the report isn't conclusive saying "Over the past two decades, most efforts to estimate the fiscal impact of immigration in the United States have concluded that, in aggregate and over the long term, tax revenues of all types generated by immigrants—both legal and unauthorized—exceed the cost of the services they use". Second, it has the same problem Yellow's Denmark data has in that its only looking at the government side of the equation. We need a study that looks at the total economic impact to know if that immigrant is really a cost or benefit. Third, this study is mostly about illegal immigration, where Yellow was talking about all immigration. Its entirely possible we make illegal immigrants cost effective simply by making them legal and hence more likely to pay more taxes and contribute more economic activity.