The number may be wrong the sentiment seems reasonable. I would hardly call the U.S. hostile toward immigrants. I can’t think of many other countries that are as diverse as the U.S. Just in my apartment building I live next to a Russian couple, a Chinese couple, a Korean couple, and a Guatemalan couple.
19.8% of the world's foreign born population lives in the US. 14.3% of people in the US are foreign born. According to this: