This oversight was immediately questioned by critics and film fans when the Oscar nominations were announced.

FORBES: What Are The Most Glaring Omissions In The List Of 2013 Academy Award Nominees?

Los Angeles (CNN) -- The first Palestinian filmmaker nominated for an Oscar was briefly detained by U.S. officials who questioned the validity of his Academy Awards invitation as he and his family arrived in Los Angeles for this weekend's event, his publicist told CNN on Wednesday.

CNN: STORY HIGHLIGHTS

Los Angeles (CNN) -- The Palestinian maker of a film nominated for an Oscar was briefly detained by U.S. officials who questioned the validity of his Academy Awards invitation as he and his family arrived in Los Angeles for this weekend's event, his publicist told CNN on Wednesday.

CNN: STORY HIGHLIGHTS