The U.S. unemployment situation becomes ever more complex the more you dig into it. It's far from simply a problem of there not being enough jobs for people to do. In fact, since the middle of 2009 the number of job openings has risen at twice the rate of actual hires, according to the Wall Street Journal. Despite the massive pool of unemployed Americans, there's a growing number of unfilled positions. Shouldn't the glut of jobless Americans be immediately filling any available job as it appears? Well, it's not happening that way. Many companies are actually having a hard time...