Gang violence has uprooted many communities in El Salvador, which gained headlines during last summer's uptick in migration to the US. But, there's no government agency dedicated to registering those who have been forced from their home.
Drug trafficking and extortion are expected to increase in Colombia as the government and FARC continue peace talks, and relationships between Guatemalan and Mexican drug gangs could strengthen.
More than half a million prisoners in Brazil occupy jails meant to house less than 300,000 people. Brazil has a number of rules that allow it to pare down the prison population - particularly around Christmas.
The new security chief will oversee 14,000 police officers and collect data on crime. Honduras has the world's highest murder rate. Critics say the move is a dangerous step.
The historic opening between the two countries could have an impact on travel and business in the long-term, though changes are likely to happen gradually.