Which president was reburied in a more secure tomb after people attempted to steal his body?
You picked George Washington, which is incorrect. There was at least one unsuccessful attempt to steal Washington's corpse, but his corpse was not reburied. Early in the nineteenth century, a new tomb was constructed at Mount Vernon for Washington's body. However, the new tomb was built for esthetic reasons. The new tomb was securely locked and the key to the new tomb was thrown into the Potomac.