US Secretary of State Hillary Clinton has pledged increased support for Mexico in the fight against drug gangs.
In Mexico as part of a high-level US delegation, she said more would be done to cut US demand for drugs and the flow of profits and guns into Mexico.
The gangs "are fighting against both of our governments", she said, adding that a broader effort would aim to tackle social problems fuelling the trade.
Ten days ago, three people connected to the US consulate were killed in Mexico.
Discussions during the one-day visit are focusing on the Merida initiative, a $1.6bn US programme of aid aimed at fighting drug cartels.
Mrs Clinton said: "This new agenda expands our focus beyond disrupting drug trafficking organisations" to include "strengthening institutions, creating a 21st Century border, and building strong, resilient communities".
She added: "The recent downturn in economic growth and remittances has aided the drug traffickers in their recruitment of young people."
'Real deal'
Defence Secretary Robert Gates, Chairman of the Joint Chiefs of Staff Admiral Mike Mullen and Homeland Security Secretary Janet Napolitano are part of the US delegation.