Quote - It probably has something to do with celebrities making money off of their looks and style and photos etc... while politicians don't do it on basis of physical appearance ...
...at least not the way that actors do :lol:

You tagged it.

A celebrity's likeness and name are marketable products, and a form of brand recognition. Just like someone selling semiconductors with the word "Intel" stamped on them would run into trouble very, very quickly, building a 3d model that looked like Paris Hilton and selling it under that name would quickly find you in up to your neck in a coterie of lawyers.

So why are politicians different? Well, the ridicule and parody of any government figure and/or institution is totally cool under the First Amendment of the US Constitution. This extends to commercial products with the name and likeness of said politician or organization.

Otherwise, a politician or institution could use existing copyright or trademark law to stifle dissent very quickly.

The only loophole in all of this is if you were to outright pretend that you were that person or organization in order to extort or make demands for consideration which you are not otherwise entitled to (which would be fraud on your part). Otherwise, have at it. :)

/P