"We're banning all imports of Russian oil and gas energy," Biden told reporters at the White House. "That means Russian oil will no longer be acceptable in U.S. ports."
Oil prices jumped on the news, with Benchmark Brent crude LCOc1 for May climbing by 5.4% to $129.91 a barrel by 1345 GMT.
Biden has been working with allies in Europe, who are far more dependent on Russian oil, to isolate Russia's energy-heavy economy. Britain announced shortly before Biden's remarks that it would phase out the import of Russian oil and gas by the end of 2022.
Biden said sanctions imposed by the United States and its allies had already caused the Russian economy to "crater". He said the latest moves had been made in close consultation with allies and partners around the world.
The United States imported more than 20.4 million barrels of crude and refined products a month on average from Russia in 2021, about 8% of U.S. liquid fuel imports, according to the Energy Information Administration, and the ban is expected to send already high gasoline prices and inflation soaring. The United States also imports a negligible amount of coal from Russia.
Biden predicted prices would rise further, but pledged to do all he could to minimize the impact on the American people. He also warned U.S. gas companies against exploiting the situation to engage in profiteering or price gouging.
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