CNN Around the World April 23, 2013 16:03:00
Or any no fly list. that was something up for debate for a while. the official said that when the fbi looked at tamerlan, there was no derogatory information found and the u.s. never deemed him a threat. the official said when the russian government asked the fbi to look into him, a task force did it from march to june 2011. the official said tsarnaev was on the text database, a testimony run by the customs and border prodekz serviard protect. it there was a misspelling of tamerlan's name which would have led to his name being missed. this was a matter addressed by the homeland security secret...
Source: archive.org