They're talking about illegal immigration on Fox today, and they brought up the strawman of how the illegal immigrants help our economy.
That is complete bullshit.
Any possible benefit the US economy receives from illegal immigration is geometrically outweighed by the drain they represent on our economy.
The only benefit they provide is a source of cheap labor. But this effect is not as large as it used to be. There is quite a large demand for this labor, and that demand is driving the pay of illegal immigrants up. In fact in the central valley of California this year, crops are rotting in the fields because they can't hire enough migrants to pick them.
The costs of this illegal immigration are myriad. First, the public services these illegal immigrants consume are a drain on our economy and taxpayers. The liberal judges have ruled that we have to give these criminals (they by definition have broken our laws) free medical care, education and in many cases welfare. Most of them work on the underground economy, so you can not even argue that they pay their fair share of taxes. They don't pay payroll taxes at all. Secondly, much of the money they earn is not plowed back into our economy to create new jobs and wealth, but instead is sent to Mexico, where it props up the corrupt regime. Money wire transfers from the US is now Mexico's second biggest source of income, behind only oil exports. We are talking billions of dollars. Thirdly the presence of so many unskilled workers drives down the wages for American citizens.
So let's lay that strawman to rest, illegal immigration DOES NOT benefit the US economy.