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Canada is the largest supplier of oil to the U.S., supplying more than 2 million barrels of oil imports a day. Here the heads of the U.S. and Canadian Chambers of Commerce argue that a new pipeline from Alberta, Canada to Texas would supply an additional 1.1 million barrels of oil a day. The pipeline project- called the Keystone XL pipeline- has been under review by the U.S. government since 2008. An Energy Dept study in February 2011 found that the project should go ahead, but it is being held up for further environmental studies by the Obama administration. The delays may be the result of opposition to Canadian oil sands development. At the same time significant progress has been made in reducing the environmental impact of oil sands development. About 80% of the water used in the process is now being recycled. Tailing ponds containing waste product from the oil shale process are also being reclaimed for green land and replanted with trees and shrubs. TransCanada says the Keystone XL pipeline could create 20,000 new American jobs for construction, and 250,000 jobs in the long run. Strict environmental standards can be followed say Donahue and Beatty, because the U.S. is partnering with Canada....

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BBC environmental correspondent points out that the climate change executive order from U.S. president Trump reversing Obama's clean energy policies is designed to change the narrative to job creation. This follows approval for building the Keystone pipeline from Canada to bring oil from oil sands production to the U.S. The pipeline was also presented as a job creation effort. Environmental groups oppose the president's action. Court action and challenges are seen as helping Republican policy of delaying implementation of Clean Power Plan policy setup to control carbon dioxide emissions under the Obama administration. 

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Daniel Yergin cites an estimate by IHS Cambridge Energy Associates which shows oil from shale and dense rock, which was about 1 million barrels a day in 2011, could reach 3 million barrels a day 2020. North Dakota where much of the production is taking place is now fourth in oil production in the U.S. after Texas, Alaska, and California, and is likely to move up to second place. U.S. imports of oil come primarily from Canada 25%, Mexico 11%, Venezuela 9%, and the Persian Gulf 16%. Canadian oil sands development has increased production and the completion of the Keystone pipeline will increase the share of oil imports from Canada. This is shifting the dynamic of oil away from the Persian Gulf, with the volatile politics in the region, and more towards North America.

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The supply of shale oil in the U.S. is changing the landscape for Mexican crude exports to the U.S. especially light Olmeca crude. Mexico's exports of crude oil declined to 881,000 barrels a day in 4 weeks through Jan 10, compared to 1.8 million barrels in Feb 2013, according to the Energy Information Administration. The Keystone Pipeline from Canada could also impact Mexico's exports.

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U.S. president Trump signs an executive order on March 28, 2017, reversing the American commitment to the Paris climate change agreement. The executive order also lifts a moratorium on the sale of coalmining leases on federal lands. The Obama administration 2015 clean power plan was designed to restrict greenhouse gas emissions from power plants. It was blocked by courts in 2016. Trump says he is reversing president Obama's war on coal. Earlier he approved the Keystone pipeline for bringing oil from oil sands in Canada to the U.S.. Under the Paris agreement the U.S. agreed to cut greenhouse gas emissions 26-28% by 2025 from 2005 levels. Market changes including the availability of cheap natural gas from technology advances fracking and hydraulic fracturing is leading a shift away from coal, apart from Obama administration regulations. Another factor is the long term trend towards cleaner energy, with large energy producers such as American Electric Power and other companies planning for the long term which is likely to be in the direction of cleaner energy. These companies see the Trump administration changes as a situation that may not be for the long term. ...

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Much of the cost for Canadian oil sands are fixed costs and once these costs are incurred production increases can take place over decades say Canadian oil sands company executives. CFO Corey Bieber of Candian Natural, says costs at it large Horizone mine are at $37.13 Canadian dollars per barrel in Jan 2015. He expects to cuts costs by at least $10 Canadian dollars per barrel by higher volume production cutting the operating expenses. Increasing production says Bieber does not mean adding people. As a result most of the Canadian oil sands producers can operate at oil well below US$47 a barrel, as low as $30, and are increasing production in 2015. This means Saudis will have to face competition from Canadian oil. It also means the Keystone pipeline will still be needed to transport Candian heavy oil to Gulf Coast refineries in the U.S. Suncor, the largest Canadian oil-sands producer, is increasing capital spending to C$7.2 and output by 11% in 2015. Canadian Natural is increasing production by 7%, and Syncrude Canada Ltd. is planning a 6% increase for 2015....

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Oil from oil sands facilities in Canada is being increasingly transported by rail to the U.S. In the first 9 months of 2013 280 million barrels of oil were transported, double that in 2012, and six times that in 2011, according to the American Association of American Railroads. Exxon Mobil is building a rail loading facility in Edmonton, Alberta, to be finished by early 2015. Rail is receiving attention for safey reasons after a crash in Quebec in 2013. The surge of Canadian crude in the U.S. will affect imports of Mexican and Venezuelan oil,

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In one of its first major votes the newly elected U.S. House of Representatives approved the Keystone XL pipeline by a vote of 252 to 161.

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A final U.S. State Dept. review of the XL Keystone pipeline shows there will be no negative environmental impact. The amount of oil from oil sands will not be increased by the building of the pipeline. The final decision will be made by president Obama.

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The Nebraska Supreme Court reverses a lower court ruling clearing a hurdle for construction of the Keystone pipeline. At about the same time the U.S. House of Representatives voted 266 to 153 in Jan. 2014 to pass a bill approving the project. It will pass a Senate vote. President Obama says he will veto the bill. The pressure clearly increases on Obama to approve the pipeline.

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TransCanada says it will reapply for the permit to build the Keystone pipeline from Alberta oil sands region to the Gulf Coast refineries.

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U.S. president Obama tells the NYT that the Keystone pipeline construction will generate about 2000 jobs during the construction of the pipeline, which would take a year or two years- really not that many jobs.