You don't get an economy growing by raising taxes.

The Keystone XL project has built strong safety measures into its design with the newest technology. Additionally, 80 percent of the new Canadian oil sands are being developed 'in situ,' meaning, it has a similar carbon footprint and emissions as conventional oil wells.

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.

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.

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.

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.

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.