Israeli border police officers (R) check the identity cards of Palestinians at a construction site during an operation in search of illegal workers in the coastal city of Ashkelon September 7, 2010. Some 150 Palestinians without work permits were detained during the operation ahead of a general closure for the Jewish New Year and amidst threats of attacks, an Israeli border police spokesperson said on Tuesday. REUTERS/Amir Cohen (ISRAEL - Tags: CRIME LAW POLITICS BUSINESS CONSTRUCTION)