Your link says:
Obama naturalized as a U.S. Citizen after Secretary of State Dean Rusk issued him a Certificate of Loss of Nationality in 1968. Obama’s Certificate of Naturalization is on file with USCIS or archived with the National Archives in Maryland.
In 1983, Obama completed the requirements to obtain a Certificate of Naturalization and become a U.S. Citizen.
What are your sources and have you tried to obtain these documents personally?
Much like the vital records in Hawai’i concerning Obama and Barry Soetoro, the documents are protected from public scrutiny by the Privacy Act.
Obama’s Certificate of Naturalization was on file with the USCIS in Missouri and then transferred to the National Archives in Maryland. A certified copy of the Certificate of Naturalization is available by Court order or a waiver of the Privacy Act signed by Obama.
An edited OLFBC pdf file posted on the White House website, a suspicious Selective Service application and a SSN with a Connecticut prefix raise doubts about Obama’s eligibility for POTUS. A Certificate of Naturalization is indisputable proof Obama is not eligible for POTUS; regardless of his nativity records, Selective Service records and Social Security records.