Look how great we are. We are to blame for everything in the world, which means we are really, really important.
Look how ridiculous are Americans. They blame us for everything.
American election was really personal for Putin because he believed that Clinton is a personal enemy. He genuinely believed she was behind the Moscow protests in 2012, 2011.
I can absolutely tell you that the FSB are rigged up to collect as much compromising information against any target they consider to be valuable. So when Trump was there in Russia, would they have collected against him? I think the answer is yes.
If there was compromising material that had a shot at actually making Trump behave the way the Russians wanted him to, I would imagine it would be something financial - illegal, dirty dealings, or something with legal import.