"We have for too long put vast oil and natural gas reserves off limits to exploration and production, as The Washington Post editorial stated this week"

This quote by Jim Costa is referring to the truth that the United States has actually been putting large oil and natural gas reserves off limitations to exploration and production. This is an issue since these resources are important for the economy and for energy security. The Washington Post editorial today highlighted this problem, and Costa is stressing the need to open these reserves for expedition and production. He is likely promoting for the elimination of restrictions on these resources, so that the United States can make the most of them and gain from their usage. Costa is most likely likewise stressing the value of energy security, as these resources are important for the nation's economic and energy security. By opening these reserves, the United States can ensure that it has access to the resources it needs to stay competitive and safe and secure.