Hasan spent 3 days in Cuba.
In that time he did the following:
He broke US law by staying at a 5 star hotel that is on the state department's banned list. (Video and eye witness accounts)
He went drinking at bars. (Self admitted)
He flaunted his wealth in front of a camera while staying in a country where people can barely afford a small amount of food.
He used the electricity provided by the Cuban government to livestream so he could keep his own income flowing in over the weekend. This happened while the people of Cuba were living without electricity, because communism is ass.
He made claims both on Twitter and while on stream about interviewing people, but, to my knowledge, there's no actual evidence of this, just Hasan saying "Ya, I interviewed this person and they totally agree with my worldview. Also, Cuban Americans aren't really Cuban."
Oh, and from what I'm reading, if Hasan was paid or received expenses for said "mission trip" while partying it up in Cuba, that's potentially fraud.
So ya, gonna state something we all know already: Hasan is a massive piece of shit who needs to see the inside of a court room.