Did Ted Cruz enter the U.S. illegally in 1974?

I don't know the legal ramifications of this, however I'll continue to post and you decide.be
Lawrence Sellin, Ph.D. a retired colonel with 29 years of experience in the US Army Reserve, argues that Senator Ted Cruz entered the United States illegally as a child in 1974.
 
His parents failed to file a CRBA form which is required by US law. Ted’s parents did not fill out the required form until 1986.It would be nice if the Cruz camp cleared this up for Republican voters.
Via Family Security Matters:

Exactly how and when did Ted Cruz obtain U.S. citizenship?

The fact that it is still an open question at this stage of the Presidential campaign is a testament either to the galactic ignorance of our political-media elite or their willingness to place political expediency ahead of the Constitution and the law.

There is no third alternative.

Rafael Edward “Ted” Cruz was born in Calgary, Alberta, Canada on December 22, 1970 and remained a Canadian citizen until he officially renounced it on May 14, 2014, eighteen months after taking the oath of office as a U.S. Senator. At the time of his birth, Cruz’s father was a citizen of Canada and his mother was a U.S. citizen.

Legally, Cruz could have obtained US citizenship through his mother consistent with Public Law 414, June 27, 1952, An Act: To revise the laws relating to immigration, naturalization, and nationality and for other purposes [H.R. 5678], Title III Nationality and Naturalization, Chapter 1 – Nationality at Birth and by Collective naturalization; Nationals and citizens of the United States at birth; the relevant section being 301 (a) (7):

“a person born outside the geographical limits of the United States and its outlying possessions of parents one of whom is an alien, and the other a citizen of the United States who, prior to the birth of such person, was physically present in the United States or its outlying possessions for a period or periods totaling not less than ten years, at least five of which were after attaining the age of fourteen years: Provided That any periods of honorable service in the Armed Forces of the United States by such citizen parent may be included in computing the physical presence requirements of this paragraph.” In that case, Cruz’s mother should have filed a Consular Report of Birth Abroad of a Citizen of the United States of America (CRBA) with the nearest U.S. embassy or consulate after the birth to document that the child was a U.S. citizen.

According to Cruz spokeswoman Catherine Frazier, Cruz’s mother did register his birth with the U.S. consulate and Cruz received a U.S. passport in 1986 ahead of a high school trip to England. Rest of Article