You've lost me. When you say how are they questioned, do you mean, what questions are they asked? If so, I have no idea, I don't work in immigration. But I do think it's reasonable to ask those deeper questions (when we are processing immigrants/illegal immigrants, in which case, that is a bit like a questionnaire as they are interviewed etc) to find out about whether their values and ideals are compatible with living in our society. We already make judgments about people in the immigration process, don't we?? Based on many things. Every country does, just some more strictly than others.
Yes. Fair enough some of them would lie, and of course it would be far more difficult than a cruise of LGBT turning up who are so open and comfortable with who they are and their values, so you know their ideals off the bat, but it would be a place to start. It would never be fool proof.
This is one example. I don't like that we welcome families into the country where the women are treated so badly, for example. We should not support that (IMO) women being second class citizens in our country. It doesn't align with what we have fought for (and still are fighting for in some ways!) so eg if someone believes women should have fewer rights or rejects equality under UK law, our law, I don't think that's something we should just ignore because we're afraid of being called discriminatory.
Do you think considering whether an immigrant/illegal immigrant is likely to uphold the same values/rules/laws that everyone living here is expected to follow is a bad thing?