"Food is spoiling. Water supply is compromised. Healthcare services are disrupted," said US Rep. Ilhan Omar. "End the blockade now."

Some Cubans got power back on Sunday after another nationwide blackout on Saturday—the second in less than a week and the third time the grid has collapsed this month after the Trump administration intensified the United States' decades-long economic blockade, cutting off the island nation from Venezuelan oil.

"The Cuban Electric Union, which reports to the Ministry of Energy and Mines, reported that the total disconnection of the national energy system was caused by an unexpected shutdown of a generation unit at the Nuevitas thermoelectric plant in Camaguey province, without providing details on the specific cause of the failure," according to The Associated Press.

Critics from around the world have condemned the US siege as "economic warfare," which is notably occurring as President Donald Trump and his allies in Washington, DC repeatedly float a potential takeover of the country located just 90 miles south of Florida.

Saturday's blackout came a day after The Washington Post reported that "the Cuban government this week refused a request by the US Embassy in Havana to import diesel fuel for its generators, calling the ask 'shameless,' given the Trump administration's fuel blockade on the island, according to diplomatic cables" reviewed by the newspaper.

It also followed the arrival of some members of Nuestra América Convoy, which is bringing humanitarian aid to the island. The effort involves hundreds of people from over 30 countries and 120 organizations.

Highlighting the convoy on social media early Saturday afternoon, US Rep. Delia C. Ramirez (D-Ill.) declared that "Trump's oil blockade in Cuba has caused a worsening humanitarian crisis—cutting Cubans off from power, food, healthcare, and clean water."

"I am heartened by the solidarity and bravery of the courageous people on the Nuestra América Convoy, arriving in Cuba to bring critical aid directly to the people," she said. "I stand with the global community demanding that the Department of State and Department of Defense ensure their safety and security."

Another progressive in Congress, Rep. Ilhan Omar (D-Minn.), similarly said later Saturday that "we must lift the US oil blockade on Cuba. This is economic warfare designed to suffocate an island. Food is spoiling. Water supply is compromised. Healthcare services are disrupted. End the blockade now. Grateful to all those helping deliver humanitarian aid!"

Current Affairs editor-in-chief Nathan Robinson is reporting on the convoy from Havana. On Sunday, he wrote that "when the power went, I was watching a concert held at the Pabellon Cuba, a delightfully strange Brutalist outdoor event space... People can live without music if they have to, I suppose. (The Cubans refuse to, though, and as I walked through the streets tonight I saw plenty of dancing in the dark.) What they cannot live without is healthcare, and the blackout is of course hitting hospitals hard. People aren't able to get crucial surgeries, or even get to the hospital, which means Trump is simply killing the sickest Cubans. Late last night, a report came in that patients on ventilators at the Hermanos Ameijeiras Hospital have died."

"It has been tragic and depressing watching the effects of the blockade. This is already a poor country. People didn't have much to start with. But now they can't take buses, they can't afford to run their cars (I have been told gas costs anywhere between 10 dollars a gallon and 40 dollars a gallon, if you can find it—this in a country where a nice meal will cost you about $20)," Robinson explained. "Food in restaurants is starting to run out. Garbage is accumulating in the streets. I had to sprint to get through a city block where the flies were so thick it was a struggle to breathe without ingesting one. The entire supply chain appears to be breaking down. Tourism is drying up—few want to come and experience shortages and sanitation crises. Taxi drivers can't drive their taxis."

"With the evaporation of tourists comes greater despair, since so many depend on this influx of foreign money. Everyone in Cuba is warm and friendly, but you can tell they're desperate. At the large San Jose art market, sellers had booths overflowing with souvenirs, and hardly anyone was there to buy. The merchants were outcompeting each other on pushiness—it was obvious many of them would not make a single sale all day," the American journalist added. "I cannot believe how cruel what my country is doing is."