Macaws and effect in Central America. A year ago, President Bush signed the Central American Free Trade Agreement. Since then, the controversial plan has inspired protests across the U.S. and in Central America. And while past trade agreements have been ratified by Congress in less than two months, the Bush administration has delayed the vote on CAFTA multiple times, unable to rally the support needed for it to pass. The latest vote is scheduled for this month, but CAFTA's passage is by no means inevitable. Many Democrats and some Republicans, having learned from the fallout of NAFTA -- for example, …