President Obama and his birth certificate…

Ok, President Obama had an interview in the last couple of days:

http://www.msnbc.msn.com/id/21134540/vp/38914715#38914715

In this he says, and I paraphrase, he doesn’t time to go around with his birth certificate plastered on his face.

My question is, has it ever been shown yet, to the people of the US that is, and why does he think we want him to plaster it on his face, rather than in newspapers, and on the air? In a manner that we can verify that he was in fact born in the US, and not in Africa as his Doctor that was there has said, his Grandmother has said (early on, now she says Hawaii), and those that were there have said?