Sarcasm.
“That’s all because the Tea Party movement, the people, all these Tim McVeigh wannabes here.”
You are right, it is sarcasm. I watched bits of Rachel Maddow over the past few days (I like to know what they are up to) and she was bringing up timothy NcVeigh quite often with regards to the Tea Party folks. Generally she follows Dem talking points to a tee. I am assuming the other government controlled networks did the same. When I snooped on the Huffington post they made the case for us being potential terrorists as well. I think he was just making fun of them.