“This lawsuit probably could have been successful in Great Britain, or possibly Canada, but not in America (YET!).”
I don’t think it has any chance of being successful anywhere, but actually I would think it has more chance of a hearing in the “litigation-happy” US.
From the recently enacted Colorado HB200
SECTION 8. 24-34-701. Publishing of discriminative matter forbidden.
No person, being the owner, lessee, proprietor, manager, superintendent, agent, or employee of any place of public accommodation... shall publish, issue, circulate, send, distribute, give away, or display in any way, manner, or shape or by any means or method, except as provided in this section, any communication, paper, poster, folder, manuscript, book, pamphlet, writing, print, letter, notice, or advertisement of any kind, nature, or description that is intended or calculated to discriminate or actually discriminates against... SEXUAL ORIENTATION, marital status... in the matter of furnishing or neglecting or refusing to furnish to them or any one of them any lodging, housing, schooling, or tuition or any accommodation, right [marriage], privilege [adoption], advantage, or convenience... on account of... SEXUAL ORIENTATION, marital status... [which] is unwelcome or objectionable or not acceptable, desired, or solicited.
If he files a criminal suit in Colorado, the law is on his side.