Well sure. If you didn’t have illegals working illegal jobs for pennies on the dollar and not paying any taxes while they get taken advantage of.
Check it out:

Conservative champions of opening the flow of legal immigration into the United States are invoking economics in hopes of winning Republican lawmakers’ support — specifically, the idea that more immigration will increase growth and cut the federal budget deficit.

The American Action Forum, a conservative think tank, will release an analysis on Tuesday that projects that an overhaul of immigration laws could boost gross domestic product growth by a percentage point each year over the next decade. That growth would produce tax revenue that would reduce federal deficits by a combined $2.5 trillion, according to the group’s president, the economist Douglas Holtz-Eakin.

“It’s very important to recognize that this is a core economic policy decision,” Holtz-Eakin said in an interview. “Let’s acknowledge the value” of immigrants, he added.

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