The oil industry is in trouble, beset by bankruptices of junior companies, write-downs by major producers, and canceled or drastically delayed projects across the board. The last thing it needs is the proposed Keystone XL pipeline, which President Trump this week moved to reignite after only five days in office.

If the president gets the approvals he needs, this would be a reversal of the Obama administration's efforts to quash costruction of the pipeline, which would link oil producers in Canada and North Dakota with refiners and export termins on the Gulf Coast. Obama, citing environmental reviews, opposed the project, saying it is not adequate given its route through the Sandhills ecosystem in Nebraska.

Beyond that, there are almost too many reasons to count as to why Keystone is a feeble proposition. The pipline would be supplied mostly by oil sand reserves in Canada, which are too expensive to unlock unless--contrary to all expecations--global oil prices magically regain record heights. Public opposition to the project is so vast as to guarantee interminable litigation and the sort of costly headline civil disobedience that has worked so effectively against completition of the similarly financially rickety Dakota Access Pipeline. Climate policies enacted by international governing bodies pose risks to development of fossil-fuel resources everywhere. Divestment campaigns are gaining momentum. Competition from cheap shale gas and renewables is formidable. Politcal cohesion among oil-producing nations is tenous.

The fundamental reality is that Canadian oil sands are economically viable only when oil prices rise to exceptionally high levels and when they stay there for a long time.

This makes the reserves that Keystone would purport to tap deeply vulnerable to oil prices, which are notorious for their volatility and neither robust today or likely to take off again in the forseeable future. The grand-daddy of all oil companies, ExxonMobil, acknowledged as much just a few months ago when it indicated it would write off 4.6 billion barrels of oil-sands reserves in Canada, where it has very little to show after a decade of acquisitions. While prices have rebounded from the high $20-per-barrel range a year ago to the mid-$50-range today, they are far short of the $80 it would take to make oil-sands production profitable.

From a strictly financial point of view--one devoid of political context--the Keystone XL is a singularly poor investment. And while bankruptcy will always be available to its owners and financiers, the losses such a project's failure would create for communities, employees, small businesses and local governments would be long-lasting.