As a Californian, I feel lucky to live in what is truly the Golden State - a place of sunshine, agricultural bounty, natural beauty, technological innovation, and boundless optimism.

The most sacred duty of the President of the United States of America is to defend and protect the Constitution and the principles it enshrines: freedom, fairness, and equality.

What makes a successful country is when you invest in the people of the country - whether it's education, health care, job training - and you rebuild a clean America to provide the kind of infrastructure that will be sustainable and let us grow.

Voting is our right, but it is also our responsibility because if we don't take the next step and elect leaders who are committed to building a better future for our kids, other rights - our rights to clean air, clean water, health, and prosperity - are placed directly in harm's way.

For years, TransCanada has been selling the Keystone XL pipeline to Americans with all of the enthusiasm of a used car salesman - and using all of the same tricks. However, one myth is more egregious than all the rest: this pipeline will enhance America's energy independence.

We must transform the relationship between police and the communities they serve.

The truth is that transitioning to clean energy like wind and solar will create millions of new, good jobs that can't be outsourced, and spur economic growth - all while avoiding the inevitable, significant damages our economy will suffer should we keep building more pipelines.

Our message to leaders from every continent was simple: California has succeeded on climate and clean energy because we've emphasized local, human values and built a coalition that includes community and environmental leaders, working families, and communities of color - as well as unions and progressive business.