I don't know why people conflate these things.

Policies intended to limit exposure to backwards, barbaric culture and ideas, and to low skill individuals is not shutting the US off to new and innovative ideas, in fact just the opposite. The US has a carrying capacity of only so many people, might as well make those people the ones most likely to have new and innovative ideas.

New and innovative ideas come hugely, disproportionately from Europe and people of European descent, no one is saying immigration of Europeans to the US should be restricted.