U.S. Congresswoman Victoria Spartz (R-IN) has announced the introduction of four pieces of legislation with Congressman Brad Sherman (D-CA) that are intended to mitigate threats posed by China and other "adversaries" to U.S. financial markets. With respect to taxation in particular, the "No Capital Gains Allowance for American Adversaries Act" would eliminate the capital gains tax break for investments in companies based in China, as well as those based in Russia, Belarus, Iran, and North Ko…