Four former presidents have been accused of corruption after Operation Carwash.
Can South America's biggest democracy run properly with a broken, corrupt political class seemingly unable to reform?
An appeals court ruling against popular Brazilian ex-president Lula has hotly divided Brazil. A legal scholar argues that this is a case of activist judges taking their anti-graft crusade too far.
Ecuador's president, Lenin Moreno, has been flirting with conservatives. Beyond irking his base, it has also lead to mass resignations and Twitter battles with his powerful left-wing predecessor.