Story highlights "Cruz did not renounce his Canadian citizenship as a US Senator- only when he started to run for #POTUS," Trump tweeted

The Texas Republican was born in Calgary, Alberta, Canada, and also had Canadian citizenship until he renounced it in 2014

Washington (CNN) Donald Trump has a fallback option for his main GOP opponent, Ted Cruz, in case the Texas senator comes up short in his bid to capture the Republican nomination for president of the United States: become Canada's prime minister.

At least that's what the GOP front-runner tweeted Friday night in his latest swipe at his closest competitor, who was born in Canada.

"Cruz did not renounce his Canadian citizenship as a US Senator- only when he started to run for #POTUS. He could be Canadian Prime Minister," Trump tweeted.

Cruz did not renounce his Canadian citizenship as a US Senator- only when he started to run for #POTUS. He could be Canadian Prime Minister. — Donald J. Trump (@realDonaldTrump) January 23, 2016





Trump has repeatedly questioned Cruz's eligibility to be president of the United States, even though legal scholars widely agree that Cruz, who was born in Calgary, Alberta, to an American mother, is eligible for the White House.

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