What can I legally do on an N400 and polygamy issue?

Part 1: I'm an Algerian citizen who entered the US with a B1/B2 visa in June 1996 and married my USC spouse in 1997. In February, 2000, I received my ten (10) years LPR card (I did not have the two (2) years temporally card. Part 2: In June 2000, my family prearranged a second marriage without my presence (Proxy marriage). This marriage was legal and officially registered in Algeria. Part 3: In September 2000, I travelled to Algeria and consummated the marriage. Part 4: After returning from Algeria, my UCS spouse consulted an attorney and was advised to divorce my foreign spouse. I travelled back to Algeria and filled for a divorce. In February 2001, we were legally and officially divorced. She was then pregnant and in June 2001 a child was born. Part 5: In 2004, my foreign spouse entered the US with B1/B2 visa. We relinked and had one (1) USC child in 2005. Part 6: In 2004, I filled N-400 but never attend the interview until it gets administrable closed. Note: The attorney I hired here did not report my second marriage nor my child and convinced me to sign and proceed with the interview but I did not after consulting other attorneys. Part 7: In 2007, my USC spouse filled an I-130 for my son as a "step-mother" and I provided my son birth certificate along with ALL my marriage/divorce for my foreign spouse and my marriage certificate with my USC spouse. At the US Embassy interview, we were questioned about the second marriage so the visa officer was aware of it. The application was approved and he is now a LPR since then and living in the US. Part 8: In 2008, we had a second US child and in 2011 we had our third US child. Note: From Part 1 to Part 8: I was still married to my US spouse. Part 9: In 2009, my USC spouse and I divorced without any issues. Part 10: In 2009, I filled I-90 to replace my LPR card and was replaced successfully.