Interior Department spokeswoman Molly Block

Any time a president visits a public place like a national park to address the American public, there are necessary additional costs associated with public safety and security.

Interior Department spokeswoman Molly Block

Like most( if not all) of us, the Secretary of Interior Department has a daily schedule that is subject to constant change, appointments that were expected get canceled, unexpected appointments arise and plans get interrupted by events. The department seeks to ensure that the public has access to the secretary's activities by posting online the various tools used to plan his day by different staff members.

Interior Department spokeswoman Molly Block