Texas Sen. Ted Cruz' office is rejecting claims that the Republican lawmaker -- and possible 2016 presidential candidate -- is a dual U.S.-Canadian citizen, and for the first time has released the senator's birth certificate.
In a throwback to the debate over President Obama's citizenship, Cruz released his birth certificate to The Dallas Morning News. Unlike with the 2008 flareup over Obama's nationality, few are challenging what the birth certificate shows -- in this case, that Cruz was born to an American mother in Calgary, Canada, in 1970.
But some are questioning the implications. The Dallas Morning News, in the same report in which it published the birth certificate, said Cruz is, by birth, a citizen of both the United States and Canada.
The newspaper cited legal scholars in asserting Cruz is technically a U.S. and a Canadian citizen, since Canadian law confers citizenship to most the moment they are born on Canadian soil.
A spokeswoman with Citizenship and Immigration Canada would not discuss the particulars of Cruz' citizenship when reached by FoxNews.com.
But the law does seem clear that somebody in Cruz' circumstances would be considered a Canadian citizen.
"Generally speaking, under the Citizenship Act of 1947, those born in Canada were automatically citizens at birth unless their parent was a foreign diplomat," the spokeswoman told FoxNews.com in an email.
If Cruz does indeed hold dual citizenship, it does not affect his eligibility to run for the White House. It could, however, prompt calls for him to renounce his Canadian citizenship all the same.
Cruz' office disputed the newspaper's claim.
"Senator Cruz became a U.S. citizen at birth, and he never had to go through a naturalization process after birth to become a U.S. citizen," spokeswoman Catherine Frazier told the newspaper. "To our knowledge, he never had Canadian citizenship."
Under U.S. law, the fact Cruz was born to a U.S. citizen parent already makes him a U.S. citizen. Many scholars also have said it makes him what the U.S. Constitution describes as a "natural-born" American, and therefore eligible to run for president.