Yes, but perhaps, even probably, not here on Earth. Assuming you mean extraterrestrial intelligent life. There are a couple of reasons they might stop by here (investigating atomic explosions, which don't happen naturally on the surface of planets and could have been detected from space) and our natural solar eclipses, which are caused by the accidental ration between the size of the sun, the size of the moon, and their distance apart and are thus rare in nature). Either of these might be a "tourist attraction" though we don't do the "atom bomb" thing any more that I know of. So, in brief, non-Earth intelligent life certainly exists somewhere. It might, only might, have visited here for the above reasons, but almost certainly isn't abducting people. As for cooperating with our government; Earth politicians are probably seen on a level with stand up comedians.
In my opinion, they are out there. I believe it to be rather selfish and ignorant to think that we are the only "intelligent" life forms in this vast, mysterious universe. We haven't even made it outside of our own solar system. There are billions beyond trillions of stars, in which are all possible solar systems. At the very least, one is liable to have intelligent life, or any life form at all for that matter.