This bill would sharply tighten U.S. pressure on Russia. It would freeze assets and block visas for Russian leaders and supporters, cut off major Russian banks and state-linked companies, ban new U.S. investment and many money transfers, stop Russian stock trading in U.S. markets, and restrict Russian energy and uranium trade. It also allows steep tariffs on Russian goods and on countries that keep buying Russian oil or gas, which could raise some trade and energy costs.