Biofuel opinions

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I see a lot of worthy debates around renewable energy and nuclear, but a subject dear to me is biofuels. Apparently the rise in food prices caused the spread of pagpag (cooked leftovers) in the Philippines.

Scientifically speaking, is this excerpt from wikipedia accurate?

Some argue that the US government policy of encouraging ethanol from corn is the main cause for food price increases.[25][61][62][63][64][65] US Federal government ethanol subsidies total $7 billion per year, or $1.90 per gallon. Ethanol provides only 55% as much energy as gasoline per gallon, realizing about a $3.45 per gallon gasoline trade off.[66] Corn is used to feed chickens, cows, and pigs, so higher corn prices lead to higher prices for chicken, beef, pork, milk, cheese, etc.[citation needed]

U.S. Senators introduced the BioFuels Security Act in 2006. "It's time for Congress to realize what farmers in America's heartland have known all along - that we have the capacity and ingenuity to decrease our dependence on foreign oil by growing our own fuel," said U.S. Senator for Illinois Barack Obama.[67]