With the latest agreement having provided temporary relief, they were expected to take a calmer look at issues including underlying structural and fiscal reforms, conditions to boost growth and firewalls to avoid contagion. "The recovery is still fragile and vulnerable to shocks, and the G20 needs to remain active and alert to downside risks," Lael Brainard, Under Secretary of the US Treasury for International Affairs, said Wednesday. "The euro area crisis remains the foremost risk to global growth, and of course to our domestic recovery," she said. "In Mexico City we will discuss with our G20 partners implementation of the concrete commitments that were made in the action plan by members in the name of achieving strong, sustainable, balanced growth." The Europeans hope the meeting of treasurers of the main developing and emerging countries will help advance efforts to increase resources for the International Monetary Fund (IMF) and contribute to a more permanent solution to the debt crisis. The 17 eurozone nations already pledged in December to contribute 150 billion euros ($192 billion) in the form of bilateral loans. They hope emerging countries, which have so far held back, will also participate so the IMF has enough funds to prevent eurozone contagion. The IMF fundraising "must have a worldwide dimension," said Amadeu Altafaj, spokesman for the European Commission in charge of economic issues. However finance ministers, including from Mexico and Japan, have said that the G20 is not yet ready to agree on providing more funds to the IMF, while the IMF is looking for promises from the eurozone. IMF director Christine Lagarde has pressured Europe to boost the resources of its own rescue fund -- the European Financial Stability Facility (EFSF) -- for fragile countries. That opinion is shared by the United States, for which "IMF resources cannot substitute for a strong and credible European firewall," according to Brainard. Mexico, which holds the current G20 presidency, is seeking to improve worldwide checks on banks and financial institutions. "That's an important issue for Mexico," said Miguel Messmacher, head of the economy planning unit at the finance ministry. "We had our crisis in 1994-1995, but after that we learned and we've reinforced the supervision and regulation of our banking system significantly, in such a way that it wasn't really affected by the international financial crisis." Other themes Mexico wishes to discuss include markets for raw materials and energy, as well as the green economy, Messmacher said. Few decisions were expected to come out of the Mexico meeting, which precedes another meeting of finance ministers in April and the G20 summit in Los Cabos, northwest Mexico, in June.