Caracas (AFP) - President Nicolas Maduro plans to limit the US diplomatic presence in Venezuela and require American tourists to obtain visas, amid growing tensions between the two countries.The leftist president said the measures, announced Saturday, aimed to "control" US meddling in Venezuelan affairs.Maduro has intensified in recent months his allegations of coup and assassination plans -- often purportedly backed by the United States -- as he faces a deep economic crisis and a sharp drop in popularity."In order to protect our country...