Michael G. Mullen: “Time is of the essence when it comes to finding better treatments for traumatic brain injuries.”

It sickened me yesterday to see security personnel, including members of the National Guard forcibly and violently clearing the path through Lafayette Square to accommodate the President's visit outside St. John's Church.

I strongly believe that Congress needs a catalyst to force members and the President to take action before it's too late.

Our fellow citizens are not the enemy and must never become so.

The defense of our Nation is the greatest challenge we face.