The president called the coup "illegal" and said the U.S. continues to recognize deposed President Manuel Zelaya the leader of Honduras. Now, if we are to follow this to its logical conclusion, then this means that we won't recognize the new government. That means we would have to remove our ambassador from the nation. We'd cut off aid and all diplomatic ties. As such, we would wind up with more diplomatic ties with Venezuela than with Honduras.
More importantly, the United Nations, the Organization of American States, and the United States have all not only condemned the coup but also continue to recognize Zelaya. How long can the new government survive with all of these groups refusing to recognize it? What will happen once the government falls? Most likely, Zelaya will regain power. Then, he will impose another term and eventually lifetime rule.
Then, you create a leftist axis in Venezuela, Cuba, Honduras, Nicaragua, and Bolivia. Our ally in the region, Colombia, has far more leftist dictators to deal with. So, where does that leave our policy in South America? Are we still going to engage with Venezuela? A coup is something you don't necessarily want to make a habit of support, but in this case, a leftist leader trying to be a dictator is even worse. By taking sides with Zelaya, we help to secure yet another dictatorship in an area in which democracies are in an ideological battle with Socialist dictators. Which side are we on exactly?