Protecting America Together Act of 2005 - Directs the Secretary of Homeland Security to establish a Border Patrol Auxiliary.
States that: (1) it is the intent of Congress that the Auxiliary be used to notify the Border Patrol if members see illegal aliens attempting to cross the U.S. border; (2) each Auxiliary organization shall be deemed to be a U.S. instrumentality when operating within the scope of its authority and exempt from federal tort claims and noncontractual civil liability; and (3) Auxiliary members shall not be considered to be federal employees except as provided for by this Act.