While he said he has "nothing against Canada" and does not have a Canadian passport, he felt that as "an American by birth and a U.S. Senator" he "should only be an American."

But how does one go about renouncing citizenship? It's not as easy as burning your old passport. Practices vary from country to country, with some examples below.

Canadian regulations afford Senator Cruz a comparatively easy renunciation road. The first step, ticking off six boxes on the list of eligibility criteria, promises to be relatively straightforward. This will include demonstrating that he or she is over 18, that he does not reside in Canada, that he presents no security threat to the country, and that he understands the full