 U.S. authorities are reporting a spike in killings, kidnappings and home invasions connected to Mexico's cartels, and at least 19 Americans were killed in 2008.Another 92 Americans were killed between June 2009 and June 2010.The U.S. Joint Forces Command noted in a December 2008 report that in terms of worst-case scenarios, Mexico bears some consideration for sudden collapse in the next two decades as the government, its politicians, police, and judicial infrastructure are all under sustained assault and pressure by criminal gangs and drug cartels.