Judicial Watch reported how much illegal immigrants cost American taxpayers annually. The total they showed was $134.9 Billion. The detailed report was done by Federation for Immigration Reform and I highly recommend you read their full report here.
If the cost was just on a national scale, the cost to taxpayers could be handled more efficiently in an economy of scale setting. But it is not and here is why. Taxpayers on the local level are more affected due to public education being funded by property taxes/state revenues. In fact, well over 80% of public education is funded at the local level. If those revenues are eaten up, then other local services go to the wayside or school systems take on massive debt, thus crippling any further expansion.
Below are some stats from the report:
the in-depth probe reveals that state and local taxpayers get stuck with an overwhelming chunk—$116 billion—of the burden. State and local expenditures for services provided to illegal aliens total $88.9 billion and federal expenditures $45.8 billion, the analysis found. For those who claim illegal immigrants contribute by paying taxes, government figures show that only $19 billion was recouped by Uncle Sam.
For state and local governments education is by far the largest expense, an eye-popping $44.4 billion that goes mostly to K-12 public schools nationwide, though over a billion of it is spent on college tuition assistance. General public services, described as expenses associated with garbage collection, fire departments and other locally-funded services total $18.5 billion for illegal aliens, the analysis found. Medical expenses came in third ($12.1 billion) for state and local governments and law enforcement ($10.8 billion) in fourth.