make it warm for (one)
To pressure one or otherwise make them uncomfortable, usually in an attempt to make them change their behavior or act in a certain way. The other students decided to make it warm for the classroom bully so he'd stop picking on the younger kids. If we want this guy to confess, we need to make it warm for him in the interrogation room.
make it (or things) warm for someone
cause trouble or make things unpleasant for someone.