This is your chance! The White House has set up a website where you can invoke your 1st amendment right to petition the government. If 5000 people sign one of the petitions, the White House will make a formal response.
So why not go for it? After all, the government has secrets. Lots of secrets. You never know what information they might give up.
So here's the deal: you can now petition the Administration to:
"Immediately disclose the government's knowledge of and communications with extraterrestrial beings."
If you don't, who will? (Okay, apparently 640 people as I type -- but MORE ARE NEEDED!)
This link should get you started (Of course they want you to sign up. Probably for targeting by abduction by those space aliens they're in contact with)