Guaido, the president of the opposition-controlled National Assembly, declared himself interim president last week after the Assembly declared that Maduro's re-election last May was illegitimate, as most opposition candidates either boycotted the race or were barred from running.
Guaido also called on Russian Federation and China - which are among the countries which support Nicolas Maduro, the country's elected president - to reach an agreement and seek opportunities.
The Trump administration imposed fresh sanctions on the national oil company PDVSA, effectively blocking Maduro from exporting crude to the USA, and granted Guaido control of Venezuelan assets at the Federal Reserve Bank of NY.
In an interview with Moscow's RIA news agency, Mr Maduro (56), facing the biggest challenge to his rule since replacing Hugo Chavez six years ago, said Mr Trump had ordered neighbouring Colombia to murder him.
The Trump administration issued a stern warning to Venezuelan President Nicolás Maduro on Thursday after reports emerged of "last-minute looting" by Russian Federation and other countries of gold and oil - and "egregious" acts of intimidation against opposition leader Juan Guaido.
Guaido, who has offered amnesty to members of the military that abandon Maduro, acknowledges that he needs its support.
According to an European Union document agreed by foreign ministers on Thursday, the so-called International Contact Group on Venezuela will seek new elections in Venezuela within 90 days through "regular, discreet and structured contacts". As Venezuela fell deeper into economic crisis years later, though, Maduro began selling them off to raise the cash he desperately needed for imports and to try, unsuccessfully, to avoid defaulting on the country's foreign debt.
"The United States of America stands ready to deliver humanitarian aid to the Venezuelan people in Venezuela as well", Pence said, adding that the administration would work with the opposition-run National Assembly to do so. "The time has come to end the Maduro dictatorship once and for all".
Fed pledges patience on rate hikes
But at some point, to avoid weakening the economy, it could slow that process or end it sooner than now envisioned. That message had sparked fears in financial markets that the Fed might tighten credit too aggressively this year.
Maduro refuses to let aid into the country, claiming it would precede a U.S. led military intervention.
Guaido said supplies of badly needed food and medicine will start entering from the Colombian border town of Cucuta.
The U.S. DOS (Department of State) stated in a statement that it will not extradite American diplomats as it did not consider the Maduro regime as the administration of Venezuela.
Translation: Today we present #PlanPaís.
"For us Venezuelans, there is only one president - President Nicolas Maduro".
Other public workers attending the pro-government demonstration said they had been forced to go there by their bosses.
Four major European powers - Britain, France, Germany and Spain - have said they would do so if Maduro fails to call presidential elections by the weekend.
"(U.S. President Donald) Trump is imposing measures because he is the dictator of the world and thinks we are his slaves". He retains support from powerful allies, including Russian Federation and China, but is growing increasingly isolated as more nations back Guaido.