To Cruz skeptics, his ineligibility is based on the fact that he was born in Calgary, Alberta, Canada in 1970. The mere fact that he was born on foreign soil would be enough, but, many believe his father was a Canadian citizen at the time of Cruz’s birth, and that Cruz’s Delaware born mother may have applied for and received Canadian citizenship before her son was born too. From their perspective, this supplementary evidence should make it clear Cruz is ineligible.

Andy Martin, an attorney who sued the governor of Hawaii in 2008 to force the release of Obama’s long-form birth certificate, said that Cruz is likely even less eligible than Obama.

“You need three sticks to meet the citizen requirement to become president: One stick is mom, one is dad, and one is the birthplace,” Martin told BuzzFeed News. “I never believed in the Kenya stuff,” he continued, referring to the conspiracy theory among many birthers that Obama was born in the African country, “and we know the mom was born in this country, so he had two sticks out of three.”

“Cruz,” on the other hand, “was born in Canada. His father was a Cuban citizen, and there’s some doubt to his mother’s citizenship,” Martin said, thereby throwing into doubt the constitutionality of his presidential run.