what is it? a suggestion?
It is the foundation of our government, but not a law.
I didn't realize that Delta Airlines is a government agency.
What this dimbulb seems to forget is that the First Amendment prohibits government from using certain criterion to use discrimination based on race, color, creed. Delta is not beholden to the same rule as a private entity. They can, within certain boundaries, discriminate against anyone they please BECAUSE THEY ARE NOT GOVERNMENT.
Private businesses has much more leeway.