You Know Why Know-Nothing, Nativist, Anti-Immigrant Blather is Wrong?

I thought it was the lack of charity, the denial of the principles on which this country was built, but I had it all wrong.
It's plumbing.
Let one immigrant explain it for you. (Don't worry, she is in no danger of being sent back where she came from, or rather, "from whence she came." I don't want to be called out for, you know, dangling.)