The birth certificate issue is the official straw man. The real issue is the FACT that for a citizen to have establish the degree affixed to being a natural born citizen, he or she must be, at the time of birth, TWO American citizens as parents. Obama's father was a British citizen in the British colony today called Kenya. Obama's mother had not yet attained the legal age of 18 in which she was eligible to pass on citizenship (that point I find hard to buy, though)
It is critial to the Obama administration that everyone keeps the birth certificate issue stewing to avoid the REAL disqualifier.