In 2013, frustrated by delays in getting approval for Keystone XL (via the Gulf of Mexico), the Enbridge Northern Gateway Pipelines (via Kitimat, BC) and the expansion of the existing TransMountain line to Vancouver, Alberta has intensified exploration of two northern projects "to help the province get its oil to tidewater, making it available for export to overseas markets". By May 2012, Canadian Prime Minister Stephen Harper had spent $9 million and $16.5 million by May 2013 to promote Keystone XL. Until Canadian crude oil accesses international prices like LLS or Maya crude oil by "getting to tidewater" (south to the U.S. Gulf ports via Keystone XL for example, west to the BC Pacific coast via the proposed Northern Gateway line to ports at Kitimat, BC or north via the northern hamlet of Tuktoyaktuk, on the Beaufort Sea), the Alberta government is losing from $4–30 billion in tax and royalty revenues as the primary product of the oil sands, Western Canadian Select (WCS), the bitumen crude oil basket, is discounted so heavily against West Texas Intermediate (WTI) while Maya crude oil, a similar product close to tidewater, is reaching peak prices. In April 2013, Calgary-based Canada West Foundation warned that Alberta is "running up against a capacity wall around 2016, when we will have barrels of oil we can't move".