The State Department is maintaining a "counter-misinformation" page on an America.gov blog that attempts to "debunk a conspiracy theory" that President Obama was not born in the United States, as if the topic were equivalent to believing space aliens visit Earth in flying saucers.
However, in the attempt to debunk the Obama birth-certificate controversy, the State Department author confirmed Obama was a dual citizen of the U.K. and the U.S. from 1961 to 1963 and a dual citizen of Kenya and the U.S. from 1963 to 1982, because his father was a Kenyan citizen when Obama was born in 1961.
In a number of court cases challenging Obama's eligibility, dual citizenship has been raised as a factor that could compromise his "natural born" status under Article 2, Section 1 of the Constitution. The cases argue dual citizenship would make Obama ineligible even if documentary evidence were shown the public, such as the hospital-issued long-form birth certificate that indicates the place of his birth and the name of the attending physician.
The entry "The Obama Birth Controversy" was written by Todd Leventhal, identified as the chief of the Counter-Misinformation Team for the U.S. Department of State. The office appears to have been established "to provide information about false and misleading stories in the Middle East," as described in a biography of Leventhal published on the U.S. Public Diplomacy website.