They were trying to, uh... outspit god for scrump. No wait, that's not it, uh... emit cod for gump? That doesn't sound right either... OH, I think I get it: they were trying to commit fraud for Trump.
I mean, it's true that they don't actually know the motive.
You can make a strong educated guess, and you'd probably be right, but until there is a full investigation leading to a conviction, they can't say that for sure.