>>9837854 (OP)
I’m not a Burger but the same is true on many employment sectors here in Bongistan. Instead of Mestizos we have migrant workers from else ware in Europe (we also have slave-tier illegals from the third world who take jobs out of the market but are a different matter). I imagine the cause and effect is however similar as it is on your side of the Atlantic albeit the motivations may differ slightly.
Migrant workers in Bongistan exist within a different economic sphere to native workers. Someone from Romania for example migrate in, take a job at minimum wage (or below) and dedicate themselves to work their fingers to the bone for 15 hours a day 7 days a week, they can live in meager quarters in a shared multiple occupancy property, live on basic food and enjoy no leisure other than cheap beer. This individual will be a hard worker but this is because the incentive is different for him over a native. Should this Romanian live in this way for 5 years he could well save enough to buy a house outright or start a reasonable business of his own back home? But were a native Brit to do the same he would not be able to do the same here, the money saved would buy a home (nor would he obtain a mortgage having worked such a job).
Migrant workers earn more than native workers despite the fact they pull in the same wage and employer’s capitilise on this. If you are technically earning 4X minimum wage (because of the disparity in equity between nations) then putting in an extra hour every day is probably tolerable (just as natives probably do without complaint in higher paying jobs) but to a native living hand to mouth with no long-term advantage it is a poor deal.
When it comes to Mexico I should also imagine migrant workers are willing to work very hard for low pay because they don’t want to be in Mexico because it’s a mess.
>How do we Make America Work Again?
You have to incentivise it. Give young men an honest opportunity to become homeowners or make savings towards future plans and they will work. To achieve that you have to close your borders to migrant workers who only offer advantage to employers.