make the scapegoat for
make someone the scapegoat for something
to make someone take the blame for something. They made Tom the scapegoat for the whole affair. It wasn't all his fault. Don't try to make me the scapegoat. I'll tell who really did it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.