"In February 2008, approval of Resolution 3545 of the National Monetary Council, linked to the Central Bank of Brazil. This established requirements for proof of legitimacy of land claims and compliance with environmental legislation as a prerequisite for access to rural credit for the Amazon biome. This was followed by creation of an industry Working Group on Sustainable Ranching in June 2009, in response to publication by Greenpeace (2009) of studies showing the origin of beef from illegal land uses, followed by commitments from beef packers to purchase only sustainably sourced cattle."