May 14, 2014?
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Yep he claimed he didn’t know he had Canadain citizenship until the Dallas Morning News broke the story back in 2013.
See story:
Dual citizenship may pose problem if Ted Cruz seeks presidency
http://www.dallasnews.com/news/politics/headlines/20130818-ted-cruz-born-a-citizen-of-canada-under-the-countrys-immigration-rules.ece