The U.S. Customs and Border Patrol (CBP) has issued a Revised Private Air APIS Guide, an update to the first edition published in 2008 that explains the requirements for pilots flying into the U.S. using the Advance Passenger Information System (APIS).
According to a report at EAA.org, the new guide incorporates several “real-world experience” recommendations from EAA members. Find out more here.