Not when you consider their $800 Billion contribution to our economy. The businesses they work for pay taxes that wouldn't be paid if they had to close or relocate over seas because of lack of employees.
The legal employees of those companies (accountants, salesmen, engineers, etc...) also pay taxes that wouldn't be paid without the companies being able to stay in business. Do you pay your share of the federal budget? It's over twenty thousand dollars per year for every man woman and child. Very few pay the amount the government spends for their benefit. The vast majority of federal taxes are paid by the wealthy. Even on the local level, most school taxes are paid by people and businesses without children in school.
To hold illegals to a different standard is intellectually dishonest.
Give me a break. For this to be true the 10 million illegals would have to contribute on average $80,000 each to the economy. But per capita, US GDP is less than $40,000. So you're claiming that illegals are twice as productive as the average US citizen?
Phony numbers do not help your case. Nor does ignoring the huge burden illegal immigration puts on the Federal government, states, cities and towns, in terms of increased education and health expenses, services, etc..
Illegal immigration is corporate welfare at its worst; it allows businesses to transfer the real costs of employment to the taxpayer.