What American national interest or larger purpose was served by such a policy?

The authors probably weren't thinking of these larger purposes when they set out to tell their personal story.

And they both have a larger purpose than just their families.

Yet there seemed to be a larger purpose evident in both the running and the cheering.

What happens if you consider she had a larger purpose?

With rare exception, there has been no larger purpose to his projects.

In any case, this project must also serve a larger historic purpose.

In his concentration on the job of the moment, our larger purposes had escaped him.

They serve a larger purpose, at least in their own minds.

But Peter also came to believe that these individuals had gathered together for larger purposes.