You are a cruel person. These people have built up their and likely their children’s lives here. You cannot change that in the span of 24 hours, even if you wanted to. To ask them to just “stay in India” is absolutely a nonsense statement.
That's no way to execute a change of status. Do you realize that people on visas can have rental property or even owned property in the US, with things in them? In some cases their kids could even be in the US.