Mark Pryor, Others Join Legislation for Keystone Pipeline Approval by Lance Turner Posted 3/14/2013 03:28 pm Updated 5 years ago U.S. Sen. Mark Pryor, D-Ark., joins a bipartisan group of lawmakers supporting legislation he says would give Congress the authority to approve the Keystone XL pipeline. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.