Congressional study outlines options for lawmakers, such as requiring chemical plant operators to have better protections.
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Unions say $158 million quoted cost is unrealistic.
House and Senate appropriators will meet in September to negotiate the final budget numbers before sending the bill to the president.
Forms for visitors will be embedded with tags containing a unique serial number linked to a database.
Group tries to convince BRAC panel to leave submarine base intact.
Programs would standardize shopping for IT services, commodities.
Agency puts out call for new inspection devices, so travelers can go through checkpoints without taking off their shoes.
Favorable ruling on whistleblower case would challenge government secrecy rules and allow court case to proceed.
National Park Service officers were assaulted 111 times in 2004, resulting in 33 injuries.
Senators say U.S. seaports remain vulnerable because DHS knows too little about contents of shipping containers.