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WASHINGTON, DC - JANUARY 08: A note pad is placed on the witness table prior to a markup hearing on Keystone XL pipeline before the Senate Energy and Natural Resources Committee January 8, 2015 on Capitol Hill in Washington, DC. The White House has threatened to veto the Keystone XL pipeline legislation which will be the first bill to be voted on under the new Republican control Senate. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - JANUARY 08:  A note pad is placed on the witness table prior to a markup hearing on Keystone XL pipeline before the Senate Energy and Natural Resources Committee January 8, 2015 on Capitol Hill in Washington, DC. The White House has threatened to veto the Keystone XL pipeline legislation which will be the first bill to be voted on under the new Republican control Senate.  (Photo by Alex Wong/Getty Images)