Fast and Furious, the Mexico gun-running sting gone bad, may cost the ATF's acting chief his job. A larger concern is that it may undermine efforts to stop the flow of US guns south.
Instead of praise, Mexican President Felipe Calderón has come under criticism in the press and even from an ex-president over the resignation of the US ambassador.
Ahead of today's visit, Mexican President Felipe Calderón said the US has not done its part to reduce arms trafficking and drug consumption, and lambasted US diplomats for leaked cables that called his security forces corrupt and uncoordinated.
The Mexico drug gang known for its brutal tactics is the initial suspect in Tuesday's attack on two US Immigration and Customs Enforcement agents.
Three Mexican mayors have been assassinated this year, but such killings draw little attention as they are increasingly common and many Mexicans believe slain politicians often have drug ties.
Current leaders of Mexico and Colombia were relieved that Prop 19 failed, but former leaders feel more free to express their support of relaxing drug laws.
Mexico applauded the Obama administration's lawsuit against the Arizona immigration law. The US lawsuit argues that the Arizona law undermines the effort to fight crime, especially the drug war. What do Mexicans say?
Voters brave enough to cast ballots for governors amid gruesome drug violence in the run-up to Sunday's Mexico election helped the former ruling Institutional Revolutionary Party (PRI) to win nine states handily.
As the US and Mexico arrested 400 people Thursday in a major operation against Mexico's drug war, a new cellphone video emerged of a Mexican teen shot by the US Border Patrol.
A high-level US delegation meets with Mexican officials today to discuss bilateral strategies for tackling the drug war. But will there be any changes during the Hillary Clinton Mexico visit?