With the July presidential election looming, OECD officials called on the next government to overhaul the tax system, labor policies, education system and carry out a significant pension reform.
Newly elected but cash-strapped governments will possibly opt for more privatizations.
The rating agency says the outcome of Sunday's congressional elections is "likely to contribute to a continuation of Colombia's track record of effective economic policy."
Paper Excellence has made an offer to buy almost 30% of the Brazilian paper and pulp giant.
The state holding building Mexico City's new international airport announced the issue date and expects to raise up to US$1.5bn through the operation.