Our Keystone legislation received strong bipartisan support in the Senate. Although it didn't receive the 60 votes necessary for passage, 56 senators - a majority - voted in favor of the bill. Despite President Obama's actively lobbying against the bill, we still won the support of 11 Democrats.

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.

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.

The key to revenue growth is tax reform that closes loopholes and that is pro-growth. Then with a growing economy, that's where your revenue growth comes in, not from higher taxes.

The reality is that nearly 80 percent of the world's purchasing power lies outside the United States, and if we don't tap those markets, others will.

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.

Democrats with a good understanding of the need for strong energy policy in our country, especially in these difficult economic times, recognized the importance of the Keystone XL pipeline.