Mexicans who have no Indian blood would still be classified as Hispanic, a race classification that is not genetically determined. Be careful though, lumping all Native Americans is one huge group is not being very respectful of them.
Lead wheel weights have been banned in the EU since July 2005, and Japan and Korea are phasing them out. Yet EPA has refused to enact a ban, instead relying on voluntary industry action.
Since the Clean Air Act was implemented on 1 January 1996, the sale of leaded fuel has been banned for on-the-road vehicles in the United States, with possession or usage subject to high fines. Other countries have been following this example.