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If that were to happen, it could prove to be a nearly insurmountable obstacle to the Democrats.

Yet each faces what could be insurmountable obstacles to success.

That is possible because urban school districts face insurmountable obstacles.

A 17-point deficit in a football game does not seem like an insurmountable obstacle.

Although getting advertisers on board will take some effort, it's not an insurmountable obstacle.

Until now, this dispute has been an insurmountable obstacle to agreement.

Based on past experience, I decided that the fat guy at the gate was not an insurmountable obstacle to people who wanted to kill me.

However, can these objectives be achieved, or will they again become yet another insurmountable obstacle?

Several times had he even made the attempt, but was stopped by some insurmountable obstacle.

He had never before come up against such an insurmountable obstacle.

"The Chinese wall doesn't hold for the adviser," he explained.

"You learn to maintain a Chinese wall between yourself as board member and your firm's searches."

"Our experience with Chinese walls in recent years is not great."

"What is he doing peddling stock if there's a Chinese wall?"

"You could have more than a Chinese wall," he said.

But nobody can claim that Chinese walls are 100 percent effective.

What we have to ensure is that there are not any "Chinese walls" between these various operations.

There need to be "Chinese walls" only in the budgetary sense.

The theory of Chinese walls is not good enough.

They deny that the concept of a Chinese wall ever existed.

But at this moment he could also be an insuperable obstacle.

They could have realized that you and your family are insuperable obstacles.

There is one insuperable obstacle to a belief in ghosts.

His developers were unaware that he was headed for an insuperable obstacle.

Damage to the plane is not necessarily an insuperable obstacle.

I don't see not having a library as an insuperable obstacle.

The obstacles against the really poor reaching the quarter deck, though not insuperable, were very high.

And for now, that remains an insuperable obstacle to any budget compromise.

We do not believe that finance should prove an insuperable obstacle.

It would study the mites themselves, even though their inability to communicate seemed to present an insuperable obstacle.