On April 2, President Trump announced plans to enact various tariffs on imported goods from practically all of America's trading partners. Amazon (AMZN 4.55%) sources products from all over the world for its e- commerce platform, so it's facing the prospect of significantly higher costs for the products sold on its site. Whether it chooses to absorb those costs or pass them on to its customers, the tariffs have real potential to put a serious dent in its margins. Fortunately, Amazon is a diversified technol ...