An interview Sunday revealed new information as to why President Obama has not approved complete construction of the Keystone XL Pipeline yet.
Presidential approval is needed for construction to begin work on the rest of the Canada-to-Texas pipeline. The pressure is on, following a US State Department report which found no major environmental objections to the development.
Sunday on 'Meet the Press' NBC'S David Gregory questioned White House Chief of Staff Denis McDonagh about the project.
McDonagh said the State Department's work was one report they were looking at. He said President Obama also wanted to see reports put together by several different departments including the EPA, and Department of Energy.
Obama has stressed the project won't be approved if it's shown to significantly increase greenhouse gas emissions.
At least two Nebraska lawmakers saw Friday's report as the last hurdle for approval.
Rep. Lee Terry said in a statement that "President Obama is out of excuses." Sen. Mike Johanns says the White House should move quickly to approve construction, saying the pipeline "is in the best interest of our country."