John Shimkus actually said...

I think you are addressing the concern that there will be a Balkanized market based upon regional differences and rules and regulations.

the transportation sector produces 29% of the Nation's carbon dioxide emissions, according to EPA.

Getting to zero emissions in transportation will not be possible anytime soon, and it will not mean the elimination of the diesel engine any...

These vehicles, which are powered mostly by diesel engines, also provide a large role in the economy of the United States.