Which Statement About US Immigration is False?

D. The United States is regarded as a 'melting pot' but not as a 'salad bowl'.

This statement is not entirely true. While the 'melting pot' metaphor is widely used, some people refer to the United States as a 'salad bowl' to emphasize the diversity of cultures and identities that coexist within the country. Both metaphors reflect different perspectives on cultural integration in the US.