(CNSNews.com) - The U.S. unemployment rate increased in August, according to the Gallup polling company, which surveys approximately 30,000 people each month about their employment status. By Gallup’s calculation, unemployment was 8.8 percent at the end of July and rose to 9.1 percent by the end of August. At the end of June, it was 8.7 percent. Gallup’s unemployment rate differs slightly from the federal government's. According to the Bureau of Labor Statistics (the federal agency that calculates the government’s official unemployment rate), the unemployment rate was 9.1 percent in July. The BLS is scheduled to report its calculation of...