[MamaTexan]

They said: “Some panels have held that a respondent’s lack of response can be construed as an admission that the respondent has no rights or legitimate interests in a disputed domain name.”.

They are right. Silence implies consent.

BUT -

The respondent can send the panel a letter responding to their decision and tell them to do something anatomically impossible with it.

THAT will hold up in a court of US law, and the respondent can go on about his business.

:-)

[1rudeboy]

THAT will hold up in a court of US law, and the respondent can go on about his business.

On what legal grounds would it "hold up?" I'm afraid that, at best, you are uninformed on this subject.