Few that I have spoken to ( even among conservatives) are aware of the birth certificate/citizenship issue.
Our Marxist dominated media has made certain that it is not publicized, and our **weenie** conservative media is afraid of being called nut jobs.
( By the way, it just steams me that Rush Limbaugh has ignored it. WHAT A BIG FAT COWARD! )
He hasn't completely ignored it, but merely touched on it briefly in a subtle way.
There seem to be some issues which the "conservative" media and "conservative" political figures can't muster up the courage to discuss and this Obama citizenship status is one. Even back in the Clinton era, things like the strange deaths of so many people surrounding WJC were pretty much taboo in "conservative" talk radio and in the Republican controlled Congress.