I navigated the nation through a period of significant economic transformation and globalization, while also facing considerable political polarization. My administration's approach to healthcare reform and environmental policy sparked intense debate, and I'm often associated with a landmark international agreement aimed at curbing climate change. Who am I?

1. My vice president later served as president.
2. I authorized the raid that resulted in the death of Osama Bin Laden.
3. I was awarded the Nobel Peace Prize during my presidency.
4. My signature healthcare law is known as the Affordable Care Act.