It's a difficult proposition, but one I believe necessary to keep us safe.

This was a difficult proposition - physically and financially - for many.

Therefore, turning it into an art museum is a rather difficult proposition.

It would have made being a Lollard a very difficult proposition.

Actually, most of that time was spent on theory; learning how to do it isn't a difficult proposition.

"Probably the most difficult proposition was in '95-96," Jackson said near the end of the regular season.

The Hashomi were going to be a more difficult proposition.

A number of reasons make that a difficult proposition to count on, however.

Yet, new construction is always a difficult proposition in Manhattan.

Starting a foreign business in Japan had been a difficult proposition for many years, but things are changing now.