Pence's appearance before the Lima Group comes at an important crossroads for the coalition of mostly conservative Latin American nations and Canada that has joined forces to pressure Maduro. Foremost among them was the addition of four governors to a growing list of more than 50 Venezuelan officials under sanctions and blocked from doing business or having accounts in the US. Guaido tried to assist the entry of the trucks across the Colombian border into Venezuela, which Arreaza said was a "well-orchestrated operation to violate the territory" of the country.
Jorge Arreaza, addressing the U.N. Human Rights Council, suggested that Maduro and Trump meet to "try to find common ground and explain their differences".
Moscow and Washington have been circulating rival resolutions on the Venezuelan crisis to a divided Security Council.
Top U.S. diplomats and their Russian counterparts recently discussed the ongoing Venezuelan crisis.
The safety of Venezuelan opposition leader Juan Guaido is at risk as he prepares to return to his country and embattled President Nicolas Maduro remains in power, the top USA envoy for the crisis told the United Nations Security Council.
The statement also rejected Pence's announcements, accusing him of attempting "to give orders so that other countries join the vulgar plundering" that Washington is pursuing against Venezuela's assets.
Elliott Abrams, in charge of steering USA policy on Venezuela, told the council on Tuesday that the Trump administration is "deeply concerned" about Guaido's well-being, hours after Maduro said in an interview with ABC News that the National Assembly leader "will have to face justice".
Pence announced new sanctions against Venezuelan officials for their role in blocking the so-called humanitarian aid from entering the country over the weekend, as the US continues to ratchet up pressure on the government of President Nicolás Maduro.
"In the days ahead, the United States will announce even stronger sanctions on the regime's corrupt financial networks".
But an attack on him, Guaido said, could backfire for the current administration.
"Under no circumstances (has) the term military force been used", he said.
Brazil, like many Western governments, has recognized opposition leader Juan Guaidó as Venezuela's legitimate leader.
Venezuelan Vice President Delcy Rodriguez said that worldwide law provided for deliveries of foreign humanitarian aid only in cases of natural disasters and armed conflicts and denied the allegations of humanitarian crisis in the country.