Supporting first term Obama immigration policies doesn't put me anywhere near the GOP.
Obama's first term is over a decade old at this point. I don't know why you think that "this was the party consensus many years ago" is an argument that's going to convince me.
Obama didn't support same-sex marriage in his first term, but I don't think that you would argue against the idea that a Democrat opposing same-sex marriage in 2023 would be taking the GOP position on the issue. You certainly wouldn't frame it as "supporting first term Obama gay rights policies."
Why do you think borders are meaningless?
I don't. I just disagree with you on the purpose of borders. Borders are supposed keep out armies of enemy countries, not individuals seeking a better life for themselves.
Freedom of movement is a human right.