The photo of the stout, four-legged creature has left park officials scratching their heads ever since it was donated by a visitor last week.

Rather than surrender their land, some property owners are digging in, vowing to reject buyout offers and preparing to fight the administration in court.

The Homeland Security Department is experimenting with a new way to track immigrant families caught crossing the border illegally and then released into the U.S.: GPS-enabled ankle bracelets.