Just when we all started to look back on 2013 and think about the significant developments that happened and how they should shape our investment thesis for the coming years, a major change from south of America's border could really reshape the dynamics of North American energy. This past week, Mexico passed major changes to its constitution to allow more foreign investment and involvement in Mexico's oil industry. With some of the largest undeveloped reserves left on the North American continent, this move could could send lots of companies south of the border for new prospects.

Tune into the video below, where Fool contributor Tyler Crowe explains why after so long Mexico has finally changed its mind on the oil industry and why he sees EOG Resources (NYSE:EOG), Devon Energy (NYSE:DVN), and ConocoPhillips (NYSE:COP) as three companies that could make the biggest strides with this move. 

Fool contributors Aimee Duffy and Tyler Crowe have no position in any stocks mentioned. You can follow them on Twitter @TMFDuffy and @TylerCroweFool, respectively. 

The Motley Fool owns shares of Devon Energy and EOG Resources. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.