The allegations also raise an old question: When does such undercover police work cross from legality into entrapment?

But they said the allegations also raised questions about the identity and function of the corps, a military education program supervised by university-paid former servicemen.

The allegations have raised as many questions as they answer.

But Archer-Daniels's own allegations have raised troubling questions about the company.

Still, those allegations also raise troubling questions.

We believe these allegations regarding Google's search engine practices raise important competition issues.

"The allegations raise serious questions of law, regulation, ethics, institutional norms and health concerning the candidates," the report said.

The new allegations about phone hacking have raised "serious questions" about the bid.

But the allegations raise the possibility that former ranking officials may be prosecuted.

Recent allegations of politicization within the Justice Department raise serious concerns.