You all missed the major point there. Cattle are primarily fed grass, not corn. The ethanol program has not driven cattle production to Brazil. McDonald's might have, but McDonald's is not the responsibility of American environmentalists, is it.
You didn't look up the search I gave you didya? Too many dots for you to connect. Too many gaps in what you think you know..
Corn has ALWAYS been a staple foodstock for US livestock. Ethanol mandates drove the prices of cattle feed sky high, making American beef much more expensive domestically and non-competitive as an export. Those 2 dots seem to be more than you can handle. Can't waste time on giving you the dots that connect THAT to rainforest beef and the rise of cattle futures in Brazil.. Too complicated for you evidently..
Just understand that MOST Americans DO get the dot picture. And the US govt mandates on ethanol as biofuel is DIRECTLY responsible for rainforest destruction in Brazil..