Oversight subcommittee is collecting data about the business practices of Alaskan firms for a July hearing.
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DHS chief says the funding could be used to send extra troops to curb border violence.
Plan aims to control cost increases and delays within weapon programs.
Top Pentagon officials are emphasizing that the future of aviation rests largely in unmanned aerial vehicle-technology that has been used increasingly in Iraq and Afghanistan.
Lawmakers question the plan to relocate 8,000 Marines from bases in Japan and challenge the fund request for research on shipbuilding programs whose future is in doubt.
Legal experts disagree on whether a pending bill can protect employee rights and national security simultaneously.
Napolitano says she supports requiring federal contractors to use E-Verify to check the immigration status of workers.
Inouye says such funding should be included in the regular appropriations process.
Rep. John McHugh, R-N.Y., says Pentagon's fiscal 2010 budget request is dictating the outcome of the Quadrennial Defense Review now under way.
Legislation would be the first of its kind for any Homeland Security agency so far this Congress.