Now, however, her mother's presence would have posed a serious obstacle for any attempt to pursue private research in secret.

Many families in Kokomo believed his presence posed an unacceptable risk.

But the presence of people in the military who must avoid the vaccine may pose logistical difficulties.

Their presence at other facilities posed too great a risk.

"Their presence in Iran - to visit or to conduct humanitarian work - poses no threat," he said.

The presence of the gas could pose a health problem for some.

The presence of judicial members on the Council may also pose additional problems.

Whether their presence poses a threat to the stability of the American Republic remains to be seen.

The presence of drug residues above the established tolerance levels for human food poses a serious health hazard to the public.

The presence of several hundred animals in church can pose hazards.