OVERSIGHT - ALL ARTICLES
Controversial security contractor is under investigation for September shooting that left 17 Iraqi civilians dead.
Critics say move will harm legal workers and the economy without solving illegal immigration problem.
Security lapses with routers and switches left taxpayer information open to possible access.
Suspended Defense contractor was designated as small and disadvantaged, but federal officials say it was never officially classified as such.
OMB says the exemption was included in draft regulations because they were based on a decades-old Defense Department rule.