Two presidents claimed to have seen a UFO. Both never declassified it. One even ran on that promise. Barack Obama and his wife are producing a documentary about a famous UFO event currently. If there is a UAP program, the presidents are not told about it, probably because of the possibility of a mishandling of that information, that's what I think. If, of course, you think it exists at all.
Not necessarily, but I do think that if there's a big UFO coverup dating back half a century, it's obviously highly compartmentalized, and probably more tightly controlled than your run-of-the-mill top secret (or even SCI) documents. Trump's a clown, it's obvious he's a clown, and the people who control such a hypothetical UFO program would do everything in their power to prevent such a clown from 1) becoming aware of their program, and if necessary 2) gaining access to information about their program.
I have often wondered what the definition of "need to know" (one of the requirements for being read into classified information) is for a President, a temporary government employee.