Even if the proposed constitution is approved by the interim Government, after public comment, it still would face formidable hurdles.

Were I to try to return to the industry I would be faced with this formidable hurdle.

Every foreigner eager to do business with the Vietnamese faces formidable hurdles.

Getting started in aerial photography is sometimes a formidable hurdle.

Getting people to switch to anything else will be a formidable hurdle.

But the plan faces formidable political hurdles not unlike those that blocked Qantas.

It has proved to be Detroit's most formidable hurdle.

But senior officers also say there are formidable hurdles ahead.

The effort does have a certain charm, but there is a formidable hurdle in the sheer awkwardness of the plot.

And that's where "Barbarians at the Gate" comes up against its most formidable hurdle.