A quote about FDR

I want to use a quote in an article I'm writing, and I can't find the
quote.  (I have a juicy quote in search of a citation.)

It goes something like this:

"It's more power that an honest man should want, or a dishonest one
should have."

I believe it to have been spoken or written by one of FDR's opponents
regarding his quest for the line-item veto.

Obviously, the quote isn't quite right; I have tried rephrasing it,
but no luck.

Ring any bells???