At this past weekend's G20 summit, U.S. Treasury Secretary Jack Lew and Canadian Finance Minister Jim Flaherty had a conversation regarding several items between our two countries. It included one subject on which we don't see eye to eye: Keystone XL. While this one exchange may not have huge implications on the overall outcome, the most recent ExxonMobil (NYSE:XOM) spill has brought pipelines back to the forefront of political discourse. 

While President Obama has publicly stated that he is leaning toward approval of the project, we probably should not expect a decision till the middle of the year. In this video, contributor Tyler Crowe gives an update on the recent Keystone XL pipeline happenings and examines the hypothetical if the pipeline were not built.

Fool contributor Tyler Crowe has no position in any stocks mentioned. You can follow him at under the handle TMFDirtyBird, on Google +, or on Twitter, @TylerCroweFool.

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