The above is simply not true. Most studies on the topic I've seen published in peer-reviewed scholarly journals show the opposite, in fact.
I take strong issue with the dogma of illegal immigration somehow benefiting the US Economy. That is akin to saying Bank Robbers somehow provide benefits to the Financial Services Industry. Assuming immigration drives down wages, it does not logically follow that the end-price to the consumer is similarly reduced. I strongly suspect that it actually drives up total societal costs (Or at minimum has no effect).
IMO The real issue is who pays the costs. Employers benefit by lower costs/higher profits while it is very likely someone else (Taxpayer) is stuck with the increased costs side of the equation.
All the studies I've seen were commissioned by local governments to be used to prove that immigrants pay less in taxes than they receive in benefits; for the purpose of trying to get federal funds to make up the difference. They ignore the value of the immigrants.
If you doubt their value, try going one week without driving on any roads built in part by illegal immigrants; eating any food picked, plucked, processed, cooked, served or transported by illegal laborers; using any appliances, equipment, or vehicles which have component parts made in jobbers' shops employing illegal immigrants; entering any building or house built in part by illegal laborers, etc...
The vast majority of Americans realize the contributions of illegal immigrants and don't consider them to be a problem.
Can you provide a link to those peer reviewed, scholarly journals.
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