I don't think anyone in this thread has even once said that discussing or controlling immigration is racist.
Are you now interested in what experts have to say - or is it just the ones who conveniently support your position?
This is a fallacy that I don't like experts, but it is a little like saying do you like meat. Some good, some not so good, some terrible.
And what I said originally was that "he who pays the piper calls the tune"
You need to trawl back and see who has played the racist card. Though less so recently since it dawned on them that it no longer holds water.