It's one of the largest energy markets in the Americas and a top oil producer to the US. Now, it's open for foreign investment.

We're talking about Mexico's oil and gas sector. On Wednesday, the country's lawmakers approved a plan to end more than 75 years of state monopoly and open it to foreign investors. 

For more on what this could mean -- both for Mexico and the US -- we're joined by Jeremy Martin, director of the energy program at the Institute of the Americas in San Diego.