That is probably true. I tried looking into it, but there's like only one interview that deals with the crying statue of liberty and Kelly frustratingly enough doesn't break character:

BNR: Where did you first get the idea for the crying Statue of Liberty who so often appears in your cartoons?

SK: I take issue with your question. Lady Liberty is a powerful symbol of our nation, and I take great care to use her sparingly. It’s only when a cartoon is dealing with issues crucial to the survival of the Republic that I usher her into my panel. To see her shed a single tear should be enough to reduce every honest, patriotic American to a puddle of distraught emotion. I think hard and long before I use a weapon like that on my readers.

Pretty funny answer though