President Nicolas Maduro says Venezuela is open to dialogue "as equals" with the United States, a day after Washington revoked American oil giant Chevron's license to operate in the Caribbean nation. "If one day the 'gringos' were to want a respectful dialogue as equals, we would do it, we have done it, and we will do it," the leftist president says before his supporters in Caracas, where a march commemorated the 36th anniversary of a social uprising known as "El Caracazo. IMAGES AND SOUNDBITES