It's a story of dark money, dirty politics and powerful people. ​When Donald Trump gave TransCanada the nod to build a pipeline that would carry Canadian crude oil to the gulf of Mexico, it seemed like liquid gold for the Alberta-based company.

But a group of angry farmers and activists in mid-western American states are trying everything they can to stop the 'ugly Canadians' from digging a pipeline and running oil through their beloved farmlands. But is anyone listening? Bob McKeown investigates TransCanada’s influential allies in Washington and the deal to build Keystone XL.