When the school system posed obstacles to Michael's education, his family knocked them down.

A group of soldiers had barely posed an obstacle for him.

But officials said the agency was not expected to pose significant new obstacles to the merger.

Their existence now poses an obstacle to serious campaign finance reform.

Indeed, if the finding is true, it could pose serious obstacles to the success of cloning.

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

That decision, scheduled to be made in 1999, is posing an obstacle for the smaller projects.

Economic realities, even beyond the deficit, pose a most difficult obstacle to any major political mission.

State law will also pose heavy obstacles to such contracts, officials in Albany said.

Her father is the wealthiest man in town, which poses obstacles to the match.