Not sure whether they can do this, but I just posted the following on the White House's Facebook page and hope it interests someone into making it a real petition! If someone here can make it one, please let me know, if not and someone else does, I will let you know and post a link here!
Dear President Obama, Respectfully, please seriously consider inviting the cast and crew of Sony's The Interview to the White House to premier their film in your own theater. They are Seth Rogen, Writer/Director/Star, Evan Goldberg, Writer/Director, Dan Sterling, Writer, and James Franco, Star. The American people will appreciate this great gesture towards these cinematic talents, which will show solidarity for freedom of expression and public artistic access, and is preferable to any unpleasant response! Thank you for your consideration and for the great job you are doing!