In fact, the partners say, their greatest obstacle is often the immigration service itself.

But given an excuse, she herself would be the greatest obstacle to that change.

"This man is the greatest obstacle to peace," he said.

Perhaps the greatest obstacle to merger is the different membership.

One of the greatest obstacles to the program could be political.

Q. But what do you see so far as your greatest obstacle?

Until now, the industry's greatest obstacle has been its own sorry record.

The industry's very structure may prove to be its greatest obstacle.

Funding is the greatest obstacle to growth for many businesses.

Still, black female artists seem to face the greatest obstacles.