Up to a dozen others may be involved in the alleged bomb plot, officials say. Police nationwide were told Tuesday to look out for suspicious activity at subway stations and stadiums.
A task force Tuesday recommended eliminating or overhauling the color-coded system, which has become a source of jokes and political controversy.
Homeland security task force is reexamining the post-9/11 system. What does 'yellow' mean, anyway?
Federal officials scouting for alternative prisons for detainees toured a maximum security prison in Standish, Mich., that may close due to budget cuts.
The Homeland Security secretary emphasized that security must be balanced with civil liberties.
Five years after the commission released its report, one key reform for US security – streamlining congressional oversight – hasn’t happened.
Of seven suspects now in custody, some had 'prior military background.' The case points to criminals' growing adoption of police and military tactics.