While new U.S. tariffs are threatening to make imported feedstocks unaffordable, uncertainty over U.S. biofuel subsidy ...

The splintering relationship between the North American neighbors could upend a multi-year biofuel industry boom that has provided farmers growing demand for their crops as fuel makers have soaked up ...

That uncertainty is the main reason Western Dubuque ... said. Farmers can alter what they plant this spring, but for a giant crushing plant built to feed what had been a growing market for ...

In Iowa, biodiesel companies are coping with unfavorable market conditions ... The company, located in Dubuque County, was formed 20 years ago by eastern Iowa farmers and business experts.