I suppose they could start by listing every Islamic terrorist attack in the US since 9/12.
Just a few, not to mention the hundreds thwarted and those disguised as "not terrorism":
6/10/04 USA Atlanta, GA 0 4 A man riding on an Atlanta commuter train mutters Qur'anic verses then attacks an army officer for no other apparent reason. An elderly woman and two arresting officers are hurt as well.
4/15/04 USA Scottsville, NY 1 2 Muslim kills his wife and attacks his two daughters with a knife and hammer because he feared that they had been sexually molested and wanted to restore their "honor."
4/13/04 USA Raleigh 1 4 Mental health problems behind member of tight-knit Muslim community deliberately running down five strangers with a vehicle? One died.
8/6/03 USA Houston, TX 1 0 After undergoing a religious revival, a Saudi college student slashes the throat of a Jewish student with a 4" butterfly knife, nearly decapitating the young man.
10/22/02 USA Silver Spring, MD 1 0 Muslim sniper kills 35-year-old bus driver.
10/14/02 USA Falls Church, VA 1 0 Muslim sniper kills 47-year-old woman.
10/11/02 USA Fredericksburg, VA 1 0 Muslim sniper kills 53-year-old man.
10/9/02 USA Manassas, VA 1 0 Muslim sniper kills 53-year-old man.
10/3/02 USA Maryland 5 0 Muslim sniper kills three men and two women in five separate attacks.
10/2/02 USA Wheaton, MD 1 0 Muslim sniper kills 55-year-old man.
9/23/02 USA Baton Rouge 1 0 Muslim sniper shoots Korean mother in the back.
9/21/02 USA Montgomery, AL 1 1 Muslim sniper kills one woman and injures another.
7/4/02 USA Los Angeles 2 0 Muslim gunman kills two people waiting at the El Al counter in the LAX airport.
1/6/02 USA Tampa, FL 1 0 Fifteen year-old flies plane into an office building in Tampa. Suicide note reveals his admiration for Osama Bin Laden and desire to commit a terrorist attack.