Mexico is currently facing a worsening crisis of methamphetamine addiction, with a significant increase in domestic use since 2009. Originally produced to meet the demand of the U.S. market, meth, known locally as “cristal”, has now firmly established itself within Mexico. As the country undergoes a presidential transition, Southern Pulse Investigator, Deborah Bonello, asks why it's crucial that the United States demonstrate its commitment to tackling this issue alongside its southern neighbor in curbing the potent drug trade.