I don't need to; I'm personally satisfied with the evidence I have.
But are you satisfied with the evidence that Joe Biden is Constitutionally eligible for the office he holds? If so, why? He's produced less evidence than Obama, but nobody's demanding that he produce any birth certificates, or parents' marriage certificates, or passport records, or kindergarten records, or baptism records. Do you even know what hospital Biden was born in? Why are you holding Obama to a different standard than Biden?
And if you're not satisfied with Biden's credentials, why aren't you demanding to see his records too? It's just as big a transparency issue. If you're going to claim that Obama should release something, it's not really much more trouble to append "and so should Biden." Failing to do so makes it look like Biden is held to a different standard, just like above.
Why am I holding Obama to a different standard? Because he is a lying, marxist sack of sh*t that lied about writing his own book (he didn’t). That lied about the inspiration his mom and dad had for conceiving him (Selma march was after his birth), lied about his relationship with Bill Ayers (They have a longstanding friendship), lied about his ties to the socialist NP party (he was a member), lied about his relations with ACORN (in every way imaginable), lied about his record on the 2nd amendment, lied about seeing a photo in Life magazine about a black man who tried to become white with chemicals but ended up badly scarred instead, blatantly lied when he said “I’ve never been a proponent of single payer healthcare”, lied about how his father ended up coming to the United States, lied about his relationship and the amount of money he received from Tony Rezko, lied about his relationship with Rashid Khalidi, is hiding his relationship with Khalid al-Mansour, lied when he claimed he has always been a Christian, lied about what he knew about his “mentor” Jeremiah’s anti-American, anti-jew views, lied about stopping smoking, lied about how he met his own wife, and has yet to let a day go by when he is not lying through his teeth.
Besides, I have relatives that know the Bidens. But by all means, take up that crusade.
Because Obama's own books, whether he wrote them or not, say his father was a British/Kenyan citizen. We also know that BHO Sr came to Hawaii in '59 and left in '62, and left the US, IIRC, in '64. By some accounts, which I find credible, the Natural born citizen requirement means more than merely born in the US. So the BC would prove who his father was, thus proving or disproving his ineligibility. When he sends legions of lawyers out to prevent the release of his early records, including his Birth Certificate, that leads somewhat naturally to the question of "just where was BHO Jr. born". For other Presidents, we have signs, national monuments, etc. For BHO, we don't even have a plaque at the entrance to the hospital, if any, in Hawaii that he was born in. Now why would *anyone* not want to say what hospital they were born in?
Other Presidents and candidates did not come to the campaign with virtually no national recognition, beyond a speech at their party's convention 4 years (actually less than 3 year from the day he announced). McCain we knew about, his father and grandfather were Navy Admirals. His picture is the Annapolis yearbook, and we saw him getting off the C-141 from Hanoi in February of '73. We know his ties to the US.
We know Biden is one of the youngest persons ever elected to the Senate (He was 29 on election day 1972, but turned 30 before taking office, as the Constitution requires). We knew he was an idiot and plagerist, but those are not, unfortunately, Constitutional disqualifications for either Senator or Vice President.