Yes, entering into a second marriage with a marriage still existing with a still-living spouse is bigamy. Registration elsewhere and citizenship are irrelevant. The documentation is the marriage certificates on file, which you can order if you wish. You do not indicate what is being litigated, or where, relating to the daughter, but the short version is that (in Nevada anyway) the questions of bigamy and child custody are entirely unrelated -- the rules and tests for custody have nothing to do with the marital status of the parents. I cannot speak to the green card issue -- that should probably be sent to a criminal law or immigration attorney for an answer.
Answered on Feb 28th, 2018 at 11:25 AM