Hispanic teams under a Hispanic supervisor will do the work, all of it, no problemas for el jefe Gringo.
The Gringo contractor only has to obtain the contract.
One roofing contractor neighbor has three teams he obtains contracts for.
Another neighbor manages software development teams around the globe.
I does not always work out that smoothly. The general Contractor (GC), the jefe, will hire an Hispanic sub for tasks likes drywalling and tiling. The sub will then hire illegals, who will do a hit or miss job. The GC will then hold back some of the payments and ask for unpaid change orders. The sub is now struck, unable to pay for its materials, the suppliers file liens, causing the GC to hold back more money. Then, wage-hour attorneys will get one of the workers as a client and file suit. While the worker may ony get a few thousand in damages, the attorney is entitled to court-awarded fees often reaching into the hundreds of thousands of dollars.
I have seen this happen many times, both in the construction and restaurant industries.