Re: More ignorance
Immigrants came to the USA from the 1700s onward. The most came over in the 1800s/early 1900s. I think you will find that Europe has changed since then. So what shit are you referring to? We don't even need ten minutes to research why this is being done. We know that you previously had (and presumably still have) a rigorous control over your borders and that people coming in from these seven banned countries already get vetted up the wazoo, and are watched while they are in the USA.
I agree that other countries, such as the UK, vet people coming in, but not as widely and intrusively as the USA are planning to do.
I also think that 'racist left wing' is a bit odd. Not that left-wing people can't be racists...