Rush did call her immoral, though not directly. What confused the point was his stated support for the Pell Grant program.
"I don't find anything wrong with assistance to people who are trying to improve themselves, who intend to pay back some of this assistance,..."
I am sure that in the context of knowing that we have a lot bigger fish to fry, that's why he doesn't find anything wrong with it. However, if we solved all other areas of government largesse and we pulled all assistance to moochers, then we could address the pell grant system. In the meantime, it is clearly a program with measurable benefits.