I'm not sure what you're watching but I haven't heard Obama mention Rash.
His chief of staff deftly named him the head of the Republican Party which has put Repugs in a knot trying to figure out if their leader really is a radio clown. It certainly appears that way and....guess what, except for the fringe elements of the Repug party, most people are disgusted by that bloated piece of shit.
If you think the sitting president is scared to death of Rush you're truly delusional.
I'm not sure what YOU'RE watching. It was Obama who stated that Republicans should "stop listening to Rush Limbaugh" (paraphrased).
The Democrats are trying to appoint Limbaugh as the leader of the GOP, in order to deflect criticism from their own policies, which has thus far done more harm than good.
The mindset is simple: The Dems would have you believed that Obama is the ONLY ONE who can fix the economy, that can "save us". Therefore, if anyone criticizes his policies, he doesn't want him to "save us"; thus, he don't want Amercans to have jobs, healthcare, etc. So, if Rush is the so-called leader of the GOP, the GOP doesn't want Americans to have jobs, healthcare, etc.
The Dems are making more noise about Limbaugh than the GOP is. That should be the LEAST of their concerns.