That's the long and short of it. And he'd be a hero, maybe even save his party from humiliation in November. But he won't...
There is NO Keystone XL Pipeline except for the one between the Cushing oil depot in Oklahoma and Texas refineries. It also has nothing to do with resuming domestic oil and gas production. A lot of that, like in N. Dakota was shut down because gas prices got too low to support higher cost fields production activities. Now that the price of oil is back up, they will start production again and get richer. Keystone was not build and probably won’t be as explained below.
https://www.nrdc.org/stories/what-keystone-pipeline
The pipeline was fought with vigor mainly because of fear of leaks from this highly toxic oil sludge damaging pipes: “Complicating matters, leaks can be difficult to detect. And when tar sands oil does spill, it’s more difficult to clean up than conventional crude because it immediately sinks to the bottom of the waterway. People and wildlife coming into contact with tar sands oil are exposed to toxic chemicals, and rivers and wetland environments are at particular risk from a spill. (For evidence, note the 2010 tar sands oil spill in Kalamazoo River, Michigan, a disaster that cost Enbridge more than a billion dollars in cleanup fees and took six years to settle in court.) Keystone XL would have crossed agriculturally important and environmentally sensitive areas, including hundreds of rivers, streams, aquifers, and water bodies. One was Nebraska’s Ogallala Aquifer, which provides drinking water for millions as well as 30 percent of America’s irrigation water. A spill would have been devastating to the farms, ranches, and communities that depend on these crucial ecosystems.”
Then there was the wild fire that ravaged the town serving the tar sands oil production: https://www.cnbc.com/2016/05/04/wildfires-cause-chaos-in-canada-oil-sands-town.html
“More than 80,000 residents have been ordered to flee after an earlier order that had applied to almost 30,000 people, mostly on the city’s south side, was extended to tens of thousands more as flames continued to make their way into the city Tuesday. Residents were panicked. Highway 63 is the only road out of the city and flames jumped the road.”
Other articles reported that 2,400 buildings, mostly houses were destroyed. In addition: “When oil prices were surging, the city and its vast reserves of oil sands fed an economic boom. Energy companies poured billions of dollars into projects and thousands of workers flowed into Fort McMurray.
But the oil slump of the last year brought an end to the prosperity. Even before the fire, the government projected an $8 billion deficit, in contrast to an $800 million surplus in 2014.” The “oil slump” was caused by the record low gas prices in 2016 which made profits for oil production drop seriously. Sorry folks, you can have cheap gas and less production, or costly gas and more production, unless you think we should have subsidized gas prices like some Muslim oil producing countries.