US president threatens economic action if vote for ‘constituent assembly’ goes ahead

Colombian president flies to Havana to seek support for regional initiative

Amid unrest over shortages and corruption, the rise of a business empire draws questions

Branches of government are at war as politicians strike back at their accusers

Luisa Ortega has transformed from government loyalist to powerful opposition voice

Nicolás Dujovne says paralysis ahead of midterm election is blocking economic agenda

Indictment forces Brazil’s leader to seek lawmakers’ support to fend off criminal trial

Case involves conversation with businessman and alleged discussion of bribes

Antonio Palocci was a senior official in both Lula and Rousseff governments

Weapons piles remain intact and peace process plagued by setbacks

Fiery populist’s comeback threatens to split opposition vote in legislative midterms

Subsidised scheme marred by claims of profiteering is draining state funds

Sérgio Cabral’s prosecution for kickbacks and money laundering is scalp for graft crusade

President may struggle to maintain momentum on reform

López Obrador alleges his candidate was robbed of victory in PRI heartland

Political turmoil remains a risk for Latin America’s biggest economy

President says political support is strong enough to pass key pension reform

Government opponents say US bank is making money out of other people’s misery

Many ask how long the military can sit on the sidelines as chaos deepens

Poll in country’s biggest state takes place against backdrop of corruption and crime

President highlights threats to military and crucial infrastructure