Dual U.S./Canadian Citizenship – Form 8854 and Citizenship Act of 2009 Updates

I wonder if anyone can help shed some light on my question. I was born in the 1950s in the United States to an American father and a Canadian mother. At that time I was considered a simple American citizen, but in the 70s I applied and was able to be naturalized Canadian due to maternal citizenship, which (with a bit of gibberish) me granted dual US/Canadian citizenship.

I recently renounced my US citizenship and hope I can avoid being considered a covered expat (based on the net worth threshold). My question – does this 2009 amendment to the Canadian Citizenship Act (below) allow me to retroactively claim dual citizenship at birthwhat would then exempt me from being classified as a covered expatriate?

Citizenship changes in 2009 – see bullet point in bold
In 2009, you became a Canadian citizen if you:

  • lost your Canadian citizenship after:
    • became a Canadian citizen on January 1, 1947
    • were born or naturalized in Canada on or after January 1, 1947
  • were born abroad and adopted by Canadian parents on or after January 1, 1947
  • were born outside Canada in the first generation of a Canadian parent on or after January 1, 1947, and you lost or never had citizenship due to old citizenship provisions

Thanks in advance for any advice anyone can provide. I will also consult an immigration lawyer on this matter.