I'm familiar with the theory of supply and demand, but I reject the idea that illegals are "driving down wages". I view them as relieving pressures that force wages up beyond that of a normal market.
Remember that the reason we originally set limits on immigration, and the reason they are so low today is because the labor unions dominate the Democrat Party. Unions use both the federal and state governments to artificially create shortages of labor in order to extort higher wages. The results are rust belt states and declining industrial sectors such as steel.
But even if you did completely away with them companies would still be hard-pressed to find Americans willing to work for minimum wage with no benefits as illegals are.
So yes they are driving down wages and forcing Americans to compete with an illegally imported labor pool. Take illegals out of the picture and you'd see wages slowly rise.
HaHaHa...You got to be a politician with double-speak like that...
Unions are hiring "undocumented" immigrants.