[Godwin1]

Well, perhaps the law was different in 1961. But today—and in 1976 when a child of mine was born while I was living and working in ARGENTINA—children of US citizen parents,or even just ONE US citizen parent,ARE US citizens at birth. My son's US CONSULATE birth document is entitled “Certification of Birth Abroad of a Citizen of the United States of America.” It is USG Form FS-545. I assume FS means “Foreign Service.”
In other words, if the laws were the same in the early sixties, Obama was a natural born citizen at birth by virtue of his mom being a citizen. There is a lot to go after Obama on. For example, why did he go to Pakistan while at Columbia. Who paid for what was a long and costly trip? Who was his roommate in NYC? How did he pay the expensive east side of Manhattan rent. Who was the NY girlfriend he boasts of dumping in Audacity of Hope. What were his college grades? What were his SAT and LSAT scores—we had to know Bush's grades! But the birth thing is a false trail. Diverts energy from real substance.

[Yosemitest]

" if the laws were the same in the early sixties, Obama was a natural born citizen at birth by virtue of his mom being a citizen"

WRONG!
A "Natural Born Citizen" won't hold up when the father wasn't a U.S. Citizen.
Please go to A "Transient Alien" (about 1/5 of the way down) and read more about Barack Hussein Obama Senior.

Senior was never at any time an immigrant to the United States, by intention or by law.  He was a person of a "transient" nature to the United States.

On the US State Department’s website on the page entitled Immigrants to the U.S. it clearly states:
    

Immigrating to the United States to live here permanently is an important, and complex decision. This section provides information to help foreign citizens desiring to permanently immigrate to determine the visas, requirements, and related materials they will need to apply to immigrate to the United States.

     
Senior had no intention of residing in the United States permanently, he was here in the early 1960’s because he was hand picked by the founder of the socialist, Nairobi People's Congress Party to come to the United States to study in preparation for Kenya’s independence.

There are two types of student visas for the United States, F-1 and M-1.  Both are classified as nonimmigrant visas by the U.S. State Department.

The mother was too young to meet the requirements of the law at that time, to transfer U.S. Citizenship to her child.

Read Citizenship Rules for People Born Outside the United States

All persons born in the United States are citizens of the U.S. (with the minor exception of certain children of diplomatic personnel). This is perhaps the only simple rule of U.S. citizenship.

Persons born abroad before May 24, 1934, to a U.S. citizen father who had resided in the U.S. at any point before the birth are considered U.S. citizens at birth. The status of the mother did not matter unless the child was born out of wedlock.

In 1940, Congress passed a law making illegitimate children born abroad to U.S. citizen women citizens if the mother had resided in the U.S. However, under this law, if the child was legitimated by the foreign national father before his or her eighteenth birthday, the child would not be considered a citizen. The U.S. citizen parent must have resided in the U.S. prior to the birth. This residence could have been in the U.S. itself, or in certain U.S. territories.

The rules changed for people born between May 24, 1934, and January 13, 1941. In 1934, Congress passed a law allowing U.S. citizen parents, regardless of their gender, to pass citizenship to their children born abroad. If both parents were citizens, only one was required to have resided in the U.S., and as with the previous law, there was no required length of time that the parent must have resided in the U.S. Illegitimate children born aboard between 1934 and 1941 became citizens under the general provision.

The rules changed again for people born between January 14, 1941, and December 23, 1952. When one parent was a citizen and the other a foreign national, the rules changed substantially. To pass on citizenship, the citizen parent must have resided in the U.S. for at least 10 years before the birth of the child, and at least five of those years had to be after the parent turned 16. Children born out of wedlock to a U.S. citizen mother who met the residence requirements were automatically citizens. For a child born out of wedlock to a U.S. citizen father, to obtain U.S. citizenship the child must have been legitimated before the age of 21.

The rules changed again for people born between December 23, 1952, and November 13, 1986(BHO was born in 1961...so this would pertain to him) When one parent was a U.S. citizen and the other a foreign national, the U.S. citizen parent must have resided in the U.S. for a total of 10 years prior to the birth of the child, with five of the years after the age of 14. (Ann Dunham was only 18...so she was~according to the law in effect at the time~UNABLE to confer US citizenship to BHO,Jr) Children born out of wedlock to a U.S. citizen mother were U.S. citizens if the mother was a resident in the U.S. for a period of one year prior to the birth of the child. Children born out of wedlock to a U.S. citizen father acquired U.S. citizenship only if legitimated before turning 21.

[TheCipher]

Well, perhaps the law was different in 1961. But today—and in 1976 when a child of mine was born while I was living and working in ARGENTINA—children of US citizen parents,or even just ONE US citizen parent,ARE US citizens at birth.

The laws were different in 1961. If he was born overseas he would not be a US citizen because she was not old enough to pass on citizenship to him.

Birth Abroad to One Citizen and One Alien Parent in Wedlock: A child born abroad to one U.S. citizen parent and one alien parent acquires U.S. citizenship at birth under Section 301(g) INA provided the citizen parent was physically present in the U.S. for the time period required by the law applicable at the time of the child's birth. (For birth on or after November 14, 1986, a period of five years physical presence, two after the age of fourteen is required. For birth between December 24, 1952 and November 13, 1986, a period of ten years, five after the age of fourteen are required for physical presence in the U.S. to transmit U.S. citizenship to the child.

She did not live in the US for 5 years after the age of 14 before he was born ( she was 18 ). If he was born overseas, not only would he not have "natural born" citizenship, he would not have US citizenship.

[WhiskeyX]

You are mistaken. The Certification of Birth Abroad of a Citizen of the United States of America is proof of staturoty citizenship, meaning U.S. citizenship conferred by the act of a statute; whereas natural born citizenship requires no act of a statute to confer citizenship. In other words, any child whose citizenship is evidenced by such a certificate is by definition not a natural born citizen eligible to the Office of the President.