Despite Venezuelan claims, the United States is not behind everything from coup and assassination plots to terrorizing children on Halloween, U.S. Ambassador William Brownfield said Tuesday. His comments came during questioning by reporters about whether the U.S. had a hand in the current diplomatic dispute between Mexico and Venezuela.Brownfield responded by rattling off a list of other things President Hugo Chavez and Venezuelan officials have erroneously blamed on the U.S.: alleged assassination plots, a coup, divisions within the governing party, a campaign to sabotage oil production, floods brought on by global warming and a plot to terrorize Venezuelan children on Halloween. "Ladies and gentlemen, how can I get any sleep with so many conspiracies and plots?" Brownfield said. "The truth is there are many things in this world that have nothing to do with the United States."