It is is not illegal to discriminate against them, but it is immoral. Renting someone else's property is not immoral. Threatening to rob (fine) or imprison some

It is is not illegal to discriminate against them, but it is immoral. Renting someone else's property is not immoral. Threatening to rob (fine) or imprison someone for engaging in any kind of consensual transaction, including short term rental, is immoral.