From report available on the Internet at
http://www.9-11commission.gov - CIA was reviewing travel control ("screen travelers and check their passports &...terrorists will lose their ability to travel undetected, and international terrorism will come one step closer to being stopped!"per Redbook CIA manual) but under Bush 41 in the early 90's CIA abandoned the efforts.
http://www.latimes.com/news/nationworld/nation/la-na-commission23aug23.story Immigration Laws Might Have Stopped Sept. 11 Plot
New commission report backs recommendation that suspected terrorists' travel be closely tracked.
By Ricardo Alonso-Zaldivar
Times Staff Writer
August 23, 2004
WASHINGTON — All of the Sept. 11 hijackers broke U.S. immigration laws and some of those violations could have led to their detection and arrest, according to a new staff report from the bipartisan commission that investigated the attacks.
The detectable violations included fraudulent passports presented by as many as seven of the 19 hijackers, the report said. Also, U.S. intelligence had linked at least three of the hijackers to terrorist groups, but officials never placed their names on the watch lists used by border inspectors.<snip>
(since 9/11) The spy agency's directorate of science and technology set up a passport analysis program to identify suspected terrorists according to the types of phony travel documents they used, and to develop scanners that could detect altered passports. But the report said the knowledge gleaned from the effort had not been used to full advantage.<snip>
Another CIA unit, the terrorist mobility branch, aims to identify individuals and organizations that help terrorists move from country to country — including corrupt officials, document forgers and travel agencies. Since January 2002, the program has "disrupted" 17 terrorist travel facilitators, the commission staff said. But the report also found that much of the analysis being produced by the branch failed to reach border inspectors.<snip>
For example, a recent investigation by the Democratic staff of the House Homeland Security Committee found that US-VISIT, a new computerized system for screening foreign visitors, could not directly access FBI databases that might contain critical information. <snip>