Sorry, I could have been more clear. It's another Trumpism. He's not saying these crazy things, but he's heard it from many other people. It's another way to promote conspiracy theories with plausible deniability.
I'm torn. On one hand, I wish I got the joke sooner, because I needed a laugh today. On the other, I'm glad I missed the context that would have made the joke clear. Overall, I'm thankful I can read HN comments without hearing Trump's voice reading the words.
For example: https://twitter.com/realDonaldTrump/status/76278182654903091...