Parus: Venezuela's opposition-led Congress leaders have met with French President Emmanuel Macron to press for humanitarian aid to their crisis-hit nation, on the first leg of a European tour seeking support against President Nicolas Maduro.

Mr Maduro's government has been criticised by the United Nations, Washington and other governments for failing to allow the entry of foreign aid to ease a severe economic crisis, while it overrides Venezuela's opposition-led Congress with a new national assembly and jails hundreds of opponents.

Government supporters perform a parody involving a Venezuelan militia member confronting Uncle Sam, symbolising the US government in Caracas on Monday. Credit:AP

"I stressed the urgency of opening up the door to humanitarian aid in Venezuela," Congress President Julio Borges said, adding that Mr Macron had been eager to help.

"We want the government of Maduro to open the door to this humanitarian help," Mr Borges said.