Which of these are the most influential architects in Washington?

What to Know The House Committee on Natural Resources and the House Agriculture Committee are investigating the impacts of the Keystone XL pipeline on the Great Plains.

The Senate Agriculture Committee has also been investigating the pipeline, but has yet to vote on its approval.

The National Resources Defense Council said last week that it’s urging the administration to “review and expedite the environmental impact assessment” of the pipeline and take into account the impacts on the Standing Rock Sioux Tribe.

The Senate is expected to vote in the coming days on a bill that would create a process for determining whether a pipeline project poses a threat to the environment, public health and public safety.

That measure could potentially affect the Obama administration’s approval of the Dakota Access Pipeline, which would carry oil from North Dakota through Iowa to Illinois.

House Republicans on Monday sent a letter to Interior Secretary Sally Jewell urging her to take steps to “immediately expedite” the environmental review process for the Dakota Pipeline.