More details here:
http://www.thepostemail.com/2016/03/27/nalc-lead-attorney-documents-obtained-from-canada-on-ted-cruz/#.Vvx4aA7_Fiw.twitter
That’s a total load of crap. Saying that Cruz is an undocumented alien is about as stupid as it comes. He has a US passport. You don’t get one of those without documentation that you are a citizen. It also doesn’t matter if his mother registered him when he was born. You aren’t required to do that. People generally do because it makes it easier to get a passport so your child can return to the US, but Cruz did not need a passport to travel from Canada to the US when he was 4 yrs old.