Iran's continued pursuit of nuclear weapons, support for international terrorist organizations, and abhorrent human rights practices pose one of the greatest threats to global security.

As many know, brain injury comes in many forms. The two most prevalent brain injuries - stroke and trauma - affect more than 2.2 million Americans, and these numbers are expected to grow.

I represent the Port of Philadelphia, and I know firsthand the important role that ports play in the national and global economy. I have also seen how simple accidents can have devastating impacts on the port system.

Yet, only years after the Nazi-era, millions were sent to their deaths in places such as Cambodia, Bosnia and Rwanda, and the world once again took too long to act.

The United States must also continue to push the United Nations Security Council for strong action to thwart Iran's nuclear ambitions. In the meantime, it is our job to take meaningful steps to eliminate the threats posed by Iran.

All told, these profit levels have put the world's five largest publicly traded oil companies on track to earn more than $100 billion before year's end. Yet, at the same time that Big Oil's bottom line is going up, so are Americans' energy costs.

The serious crimes by the Sudanese government and the government-supported militias must be met with serious consequences. We must work for tough international economic sanctions on the Sudanese government.