Nike could soon face another blow in its effort to revive its brand and reverse a long decline in sales: U.S. tariffs on imports from Vietnam. On Wednesday, U.S. President Donald Trump is expected to announce which countries and products he will target with a new round of tariffs aimed at encouraging domestic production and coaxing other nations to buy more U.S. goods. Vietnam, which runs a $123.5 billion trade surplus with the United States, is a prime target.