`` If there are literally hundreds of people going back to Western Europe , the ability of the police to literally sit on everybody becomes problematic from the standpoint of having the manpower , '' said Michael Chertoff , who was secretary of homeland security under President George W. Bush . European police are busy after last week 's terror attack in Brussels . There 's been a raid in Belgium and arrests around Europe . Officials are trying to determine the nature of the attack .
European police are busy after last week 's terror attack in Brussels . There 's been a raid in Belgium and arrests around Europe . Officials are trying to determine the nature of the attack .