Four U.S. Republican Senators on March 17 introduced a bill to ban imports of Russian uranium into the country as the United States moves to further isolate Moscow in the wake of its invasion of Ukraine. The bill was introduced by Sens. Kevin Cramer (R-N.D.), John Barrasso (R-Wyo.), Cynthia Lummis (R-Wyo.), and Roger Marshall (R-Kansas) and would go into effect 45 days after it is enacted if it is passed by the Senate and House of Representatives. The United States, with 93 operating nuclear reactors, has more than any other country and is heavily reliant on imported uranium. While President Joe Biden has so far levied a string of sanctions against Russia including restricting oil, natural gas, and coal imports, it is yet to ban imports of Russian uranium, which made up 16 percent of U.S. purchases in 2020, according to the Energy Information Administration. Russia’s uranium production is controlled by Rosatom, a state-run company formed by Russian President …