Interesting tidbit from Wiki:
Callista Bisek met Newt Gingrich in 1993 when he was House Minority Whip and she was working in the office of Congressman Gunderson.[21] Callista testified in 1999 as part of Gingrich’s divorce proceedings that the couple began a six-year affair in 1993 while Newt was married to his second wife, Marianne.[22][23] Newt divorced Marianne in December 1999, and on August 18, 2000, Callista and Newt were married in a private ceremony in Alexandria, Virginia.[3] In 2002, Newt Gingrich asked the Catholic Archdiocese of Atlanta to annul his 19-year marriage to Marianne on the basis that she had been previously married.[24] Callista, a lifelong Catholic, was instrumental in her husband’s conversion to that faith in 2009.[25] The Gingriches live in McLean, Virginia.[2]
https://en.wikipedia.org/wiki/Callista_Gingrich
He’d been previously married, so, I don’t understand his point.