From the world wars of Europe to the jungles of the Far East, from the deserts of the Middle East to the African continent, and even here in our own hemisphere, our veterans have made the world a better place and America the great country we are today.

Delayed energy projects and regulatory hurdles to domestic oil production not only cost the United States economy billions of dollars and millions of jobs, but they also stand in the way of an elusive goal: true American energy security.

Since 2006, we have surpassed Alaska, Oklahoma, Louisiana, and California in oil production to become the second largest oil-producing state in the nation, trailing only Texas. In 2012, North Dakota produced more than 245 million barrels of oil and provided nearly 11 percent of all U.S. output.

Nowadays, business is all about productivity - and our folks produce.

On Earth Day, we celebrate all the gifts the world and nature make available to us. We recognize our complete dependence on its bounty. And we acknowledge the need for good stewardship to preserve its fruits for future generations.

The irony of environmental opposition to the Keystone XL project is that stopping the pipeline to the U.S. will not stop production in the oil sands of Canada. Instead of coming to the United States, the oil will still be produced and shipped by rail or a pipeline similar to the Keystone XL to Canada's Pacific Coast.

President Roosevelt's leadership put the world on notice that the United States of America - with the freest, most dynamic economy the world had ever seen - was open for business.