Republicans imply all the time that welfare is a fraud to the majority of people who are drawing it.
Don't take my word for it, read the party platform.
https://cdn.gop.com/docs/2012GOPPlatform.pdf
They regard most "en lements" as "temporary". This is merely the official platform. Read what conservatives generally say about welfare.
http://insider.foxnews.com/tag/welfare
Run through the news feed. If you were to ask no few number of Republicans about it, they would almost universally say to scrap the system entirely. The guys I have beer with every week say as much.
Not a universal view to be sure, but certainly not an uncommon view, if you take the time to listen to what is said.
It is all negative, all the time. Run through that Fox News link and find ONE article about someone on welfare that is even mildly empathetic.
As for Democrats not addressing welfare fraud enough, define "enough".
I am all for addressing and minimizing fraud to the extent possible. There is fraud, and it happens all the time, as the Fox News feed so aptly points out, at every chance they get.
Once one does enough reading it begins to look like a very effective propaganda campaign that plays up the amount of fraud, while minimizing the benefits and demonizing recipients.
Ask yourself why you didn't state the opposite "Republicans don't often address the good that comes from welfare programs".
Look for any evidence of that here. As a Democrat, I am happy to try to fix and prevent abuse. Try finding a Republican, ANY Republican that says that there is some value in welfare programs.
I'll wait.