 Between 1861 and 1865 continues to shape U.S. politics in a contentious election year in which issues of race, constitutional rights, and presidential power are at the forefront. And it is Independence Day. Most federal offices and banks are closed. Costco will be closed today, but the vast majority of major national retailers are open. Some are offering promotional sales. You forgot something, maybe for the big cookout. With the Fourth of July falling on a Thursday, many Americans plan...