OH, no....ANSI's relationship to the ISO goes back to 1946-47 when the ISO was started and the organizations relationship to 9001 is no secret at all...they belong to TC176 (and TC207 for the 14K folks), in fact ANSI is who sets the rules for who can or cannot play in their ISO ballgame on the American portion of the TC's.
This is one of the cases I just have to stand up and scream "BULL S*IT".....unless they can prove it.
Their claim has no more validity than my claim would that DSEQ, Inc. adheres to ISO 9001:2000 & 14001:2004 (DSEQ,Inc. is my corporation that I did personal business under and is still a legal corporation)...BTW we don't, but I could make the claim as well.