Those have been put in placed to punish Russia for actions, including its annexation of Ukraine's Crimea, efforts to interfere in the US elections, and support for Syria's government in its civil war. 11 of Trump's fellow Republicans in the US Senate agreed. Some lawmakers from both parties also said sanctions shouldn't be lifted, while Special Counsel Robert Mueller investigates whether Trump's 2016 presidential campaign colluded with Moscow.
Deripaska had ties with Paul Manafort, Trump's former campaign manager. Manafort pleaded guilty in September 2018 to attempted witness tampering and conspiring against the United States. The US Treasury Department say the three companies have reduced Deripaska's direct and indirect shareholding stake and cut his control, but the man himself remains subject to US sanctions.