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This is not to say that formidable political obstacles don't stand in the way of reform.

He could be the first formidable obstacle to the Administration's legislation.

But such an effort would have run up against formidable practical and political obstacles.

The front and sides were a formidable obstacle to freedom.

But any effort to close state prisons will face formidable political obstacles.

There have always been formidable obstacles to Goldman's going public.

Despite its promise, the new technology faces some formidable obstacles.

"There is still a lot to be done and formidable obstacles ahead, but I think we are on the right path."

There are formidable obstacles, the first being that half the nation's work force is happy working for the government.

He had a right to know how formidable an obstacle was now placed in his way.