you are running over the same ground for several pages now. the links are out there......review them again, read the language/words they are using and how they are using them, not what you want them to, to win an argument on the interwebz that no one will see or care about in a week
you continue to conflate separate actions/issues, being asked- invited to attend an event is not being asked to speak, they could not possibly have accommodated 535 plus the presidents, laz raza, nea, seiu, afl-cio etc. they sent a general form letter/email to 'representatives' ( congress, both houses) they were invites to the event, NOT requests to speak.
If you read the links his response was perfectly consistent - He got his general invite to attend ( as a spectator) said no thx. He made whatever plans there after.