Due to inclement weather conditions, the U.S. Capitol Visitor Center will open at 10:30 a.m., Tuesday, January 27. The first tour of the U.S. Capitol will begin at 10:50 a.m.
Before the Civil War, members of Congress grappled with the anticipated benefits of expansion into western territories. To inform legislative decisions that would affect the territories and their inhabitants, Congress relied on maps and reports of expeditions, such as those led by explorer John C. Frémont, a member of the Army Corps of Topographical Engineers. The subsequent expansion, however, ignited a passionate debate over the expansion of slavery, pitting the proslavery South against the antislavery North.