This is nine parts politics, one part legitimate concerns about national security.

This increase shortchanges American consumers and national security because automakers already have the technology to raise fuel economy much more significantly.

In this case, the concerns that you're citing were addressed and resolved. There were no national security concerns that were not addressed.

There are still legitimate concerns filling out the product palate. It's a bit of a one-trick pony.

I've stated before that nine and 10 are my concerns and David is another option there,

The academy has been dealing with the issue of scientific openness versus national security since 9/11,