As the Russian economy continues to languish, the United States is evaluating its options for increasing pressure on the Kremlin as part of a two-pronged approach that would prohibit U.S. citizens from buying up Russian debt and also target Russian oligarchs. The U.S. Treasury Department will craft the proposal and is expected to release it early next year. Though neither prong is assured implementation and both will likely spark a political tussle between the administration of U.S. President Donald Trump and Congress, the proposals will give the United States two weighty options to further damage Russia's already battered economy....