Sarah Shaw, a New Zealand woman living in Washington State, and her 6-year-old son Isaac were detained by US immigration at the Canada-US border on July 24 after attempting to return home from dropping off her other children in Vancouver. Shaw held a temporary immigration document allowing her to travel and re-enter the US. Officials identified an administrative error with her paperwork. The pair were transferred to the Dilley Immigration Processing Centre in Texas, where they are being held. They do not have access to their personal belongings.