Final answer:
The conclusion that most Americans draw from their 'grudging fairness' is that today's immigrants are similar to earlier Americans.
Step-by-step explanation:
From the information provided, the conclusion that most Americans draw from their 'grudging fairness' is that today's immigrants are similar to earlier Americans. The text mentions that America is a melting pot where different ethnic groups have assimilated into the dominant culture over time. It also states that immigrants have been absorbed into U.S. culture, sometimes after facing prejudice and discrimination. Therefore, it can be inferred that most Americans see similarities between today's immigrants and earlier waves of immigrants.