Yau Ming Low/iStock Editorial via Getty Images Investment Thesis Western Union (NYSE:WU) was once one of the most important companies in the United States, but it is currently doing very poorly from the perspective of revenue and earnings growth. It's reassuring to see that the company maintains good operational margins, and some investors will surely appreciate the strong dividend yield resulting from a low valuation relative to history. I'm quite frustrated that management seem to have no credible plan fo ...