Speaking at the World Economic Forum in Davos, Switzerland, the president said he would battle "day and night" to win passage of social security reform through Congress. The reform includes an overhaul of Brazil's costly pension system.

He also joined other world leaders at the annual summit in criticising protectionism, comments delegates see as directed at U.S. Donald Trump, who is due to speak here this week.

(Reporting by Noah Barkin; Editing by Mark Bendeich)