Few leaders are faced with the churning instability that confronted Enrique Peña Nieto when he was elected president of Mexico in 2012.

He's found success in deregulating industries, and bringing in billions of dollars of investment in Mexico's auto and energy sectors.

And he's willing to take great political risks as well, such as when he invited then-candidate Donald Trump to an impromptu summit last summer.

Facing an increasingly volatile populace, the man they call EPN has greater challenges ahead.