On May 29, 1787, the delegates gathered at the Constitutional Convention in Philadelphia got down to the business of hammering out a government for the United States of America.
In 1854, Wisconsin rejected the federal Fugitive Slave Act, which mandated Northern states return Southern slaves without due process, demonstrating both the validity and usefulness of nullification.
April 19 marks the 20th anniversary of the Waco, Texas, massacre of Branch Davidian church members at the organization's Mount Carmel compound. Some 82 Davidians (including 26 children) and four ATF agents were killed in two related episodes.
April 18 is the 238th anniversary of the ride of Paul Revere to warn patriots of the march of British soldiers toward Lexington and Concord.