Knowing how crap works in Washington this is being done to “soften us” tot he idea that aliens exist because our government made contact in the early 50’s, probably made contact with multiple space faring species and then formed a pact with the one that probably promised the sick bastards in washing to most amount of goodies instead of the ones that said “we can help you but you gotta be responsible and work hard etc...” we probably got betrayed in the 60’s when the aliens didn’t deliver fully and overstepped their bounds on the “treaty” that was made with them by abducting more than they were supposed to do or something like that.... Which all led to the government really clamping down on any alien existence information...
Why...
Well because then the politicians in Washington would have to admit to betraying us...
Why...
Because all the FDR socialist politicians were chumps who didn’t realize they were going to be screwed by ETs.
Why now...
Because most of the Politicians then are almost all died off and they current corrupt bastards think they can sew unrest by eventually exposing the existence of aliens to the nation....
Oh don’t worry, they will still fight like hell to prevent us from knowing how badly we were initially screwed over by them....
MJ-12, anyone?
Yeah, there's a ton of fascinating data from the late 40s through the late 50s about that very subject. Some of it is tough to dismiss out of hand. Read Major Donald Keyhoe's early books about the subject. Very no-nonsense and straight forward reporting of hundreds of military accounts. Riveting stuff.
I'm actually not sure what to think about the MJ-12 stuff. I read the first report about it when it began to circulate in the mid 80s. It all sounds very credible, but tough to prove. Darn near impossible, in fact.