Obama doesn't need a birth certificate - even if he was born in Kenya to a Kenyan father - who was at the time a British national per their immigration rules, his mother was an American citizen who spent at least five years after the age of fourteen in America, two of which were consecutive, from 14 through the age of 16... even if Oblama was born in Iraq, or Afghanistan, or B*ttf*ckistan - he's still an American citizen, pure and simple. Moot issue is MOOT. This is the last time I will explain this, as I've gone over this ad nauseam with about half a dozen people. If you don't like it, lobby the Congress to change citizenship rules. Full stop.
As for Building Seven, that will NEVER be explained, as no one has taken the time to A.) Call G.M. out on it, or to B.) Research into why it happened beyond the official put out by the 9/11 Commission Report, of which I have a copy and their excuse is basically that the falling of the other two towers cause it to fall in a clean, demolition-style collapse.
Actually the law at the time would be the reference and Obama's mother was not considered to be in the US long enough at her age. That aside, the fact that she left Hawaii almost immediately after Barry was born to attend college would lead me to believe he was born in Hawaii and that there is some other reason he does not want to publish it.
There are plenty of reasons that Bldg 7 could fail all having to do with the building practices of the time they were built with full length cantilever floor joists, heat, and time, the very same thing that is thought to have brought down the towers but that it took longer because of the size of the structure itself. Again, I say, that the simplest explanation is usually the best explanation.