A controversial oil pipeline is one step closer to start-up.

The Republican-controlled House of Representatives has passed legislation to approve the Keystone XL oil pipeline from Canada to Texas.

And next week the U.S. Senate may give the pipeline its thumbs up as well.

The House voted 252-161 on the bill sponsored by Republican Bill Cassidy of Louisiana.

The pipeline has been in limbo for six years – stalled by political wrangling, environmental reviews and objections to the proposed Keystone XL route.

After today’s vote, Senate supporters say they’re confident they’ll get the 60 votes needed –  for passage next Tuesday.

The White House has threatened to veto attempts to move the pipeline forward.