Well Tom, let's hope the FBI and CIA are watching closely at ANYONE with ties to Al Queida who works here in the US as a microbiologist. One of them was tied to terrorists who hit the Pentagon.
From an article today on MSNBC:

"In late December 1999, intercepted conversations on the Yemen phone tipped off agents to the January 2000 Kuala Lumpur summit, and to the names of at least two of its participants: Almihdhar and Alhazmi. The condo where the meeting took place was a weekend getaway owned by Yazid Sufaat, a U.S.-educated microbiologist who had become a radical Islamist and bin Laden follower. He was arrested last December when he returned from Afghanistan, where he had served as a field medic for the Taliban. Sufaat’s lawyer says his client let the men stay at his place because “he believes in allowing his property to be used for charitable purposes.” But he claims Sufaat had no idea that they were terrorists."

Yeah....right.
For the full story, go here (yeah, one day I might learn HTML).

http://www.msnbc.com/news/760647.asp?0bl=-0