President Joe Biden has decided to ban Russian oil imports, toughening the toll on Russia’s economy in retaliation for its invasion of Ukraine, according to a person familiar with the matter.

The move follows pleas by Ukrainian President Volodymyr Zelenskyy to U.S. and Western officials to cut off the imports, which had been a glaring omission in the massive sanctions put in place on Russia over the invasion. Energy exports have kept a steady influx of cash flowing to Russia despite otherwise severe restrictions on its financial sector.

Biden was set to announce the move as soon as Tuesday, the person said, speaking on condition of anonymity to discuss the matter before his remarks. The White House said Biden would announce “actions to continue to hold Russia accountable for its unprovoked and unjustified war on Ukraine.”

The U.S. will be acting alone, but in close consultation with European allies, who are more dependent on Russian energy supplies. European nations have said they plan to reduce their reliance on Russia for their energy needs, but filling the void without crippling their economies will likely take some time. Natural gas from Russia accounts for one-third of Europe’s consumption of fossil fuel. The U.S. does not import Russian natural gas.

Biden had explained his reluctance to impose energy sanctions at the outset of the conflict two weeks ago, saying that he was trying “to limit the pain the American people are feeling at the gas pump.”

Gas prices have been rising for weeks due to the conflict and in anticipation of potential sanctions on the Russian energy sector. The U.S. national average for a gallon of gasoline soared 45 cents a gallon in the past week and topped $4.06 on Monday, according to auto club AAA.

Even before the U.S. ban many Western energy companies including ExxonMobil and BP moved to cut ties with the Russia and limit imports. Shell, which purchased a shipment of Russian oil this weekend, apologized for the move on Tuesday amid international criticism and pledged to halt further purchases of Russian energy supplies. Preliminary data from the U.S. Energy Department shows imports of Russian crude dropped to zero in the last week in February.

In 2021, the U.S. imported roughly 245 million barrels of crude oil and petroleum products from Russia — a one-year increase of 24%, according to the U.S. Energy Information Administration.

“It’s an important step to show Russia that energy is on the table,” said Max Bergmann, a former State Department official who is now a senior fellow at the Democratic-leaning Center for American Progress.

Bergmann said it wasn’t surprising that the U.S. was able to take this step before European nations, which are more dependent on Russian energy.

“All of this is being done in coordination, even if the steps are not symmetrical,” he said. “We are talking to them constantly.”

The news of Biden's decision Tuesday was first reported by Bloomberg.

Before the invasion, Russian oil and gas made up more than a third of government revenues. Global energy prices have surged after the invasion and have continued to rise despite coordinated releases of strategic reserves, making Russian exports even more lucrative.

As a consequence of Russia's invasion of Ukraine, the U.S. and international partners have sanctioned Russia’s largest banks, its central bank and finance ministry, and moved to block certain financial institutions from the SWIFT messaging system for international payments.

But the rules issued by the Treasury Department allow Russian energy transactions to keep going through non-sanctioned banks that are not based in the U.S. in an effort to minimize any disruptions to the global energy markets.

Biden specifically highlighted those Russian energy carve-outs as a virtue because they would help to protect U.S. families and businesses from higher prices.

“Our sanctions package we specifically designed to allow energy payments to continue,” he said. Biden’s actions Tuesday were not expected to affect other nations' energy payments to Russia.

Inflation, at a 40-year peak and fueled in large part by gas prices, has hurt Biden politically with voters heading into the November elections.

The sanctions created a possible trade-off for the president between his political interests at home and abroad. By invading Ukraine, Russia has potentially fed into the supply chain problems and inflation that have been a crucial weakness for Biden, who now is trying to strike a balance between penalizing Putin and sparing American voters.

While Russian oil makes up a small amount of overall U.S. energy imports, the U.S. could replace Russian crude with imports from other oil-rich nations, but that could prove politically problematic.

Key U.S. senators are warning the Biden administration from seeking any oil import deal from the Nicolas Maduro regime in Venezuela.

“The Biden administration’s efforts to unify the entire world against a murderous tyrant in Moscow should not be undercut by propping up a dictator under investigation for crimes against humanity in Caracas,” said Sen. Bob Menendez, D-N.J., the chairman of the Foreign Relations Committee, in a statement late Monday. “The democratic aspirations of the Venezuelan people, much like the resolve and courage of the people of Ukraine, are worth much more than a few thousand barrels of oil.”