Sigh...
1. No, the content rules don't mean that, and more than half of cars and trucks in North America are already above the 75% threshold.
2. Raising Mexican wages to a level that is still much lower than US wages isn't going to reduce outsourcing. All it's going to do is raise the cost of the car. If you have one worker who gets $16/hr, and there's another worker who does the exact same job for $24/hr, which worker are you going to hire?
How does raising wages for less than 700,000 Mexican workers to a rate still below US wages do anything to reduce outsourcing? It's such a stupid piece of nonsense, it's no wonder you're fixating on it. Raising Mexican wages to a level that is still below US wages doesn't make US wages more competitive by magic. The wage is still lower, and a company isn't going to suddenly reconsider outsourcing when you're still making it attractive to outsource by offering wages still below that of US ones.
You get that, right? Or are you brain damaged?