Calvin Coolidge actually said...

But more important still, I do not believe that permanency of appointment of those engaged in the professional and scientific activities of ...

I am not unmindful of the primary purpose of this bill to coordinate the public-health activities of the Government, and the importance of e...

I am constrained, therefore, to withhold my approval of this bill.

If it stood by itself it might not be important enough to warrant a veto.