National Immigrants Day is observed on October 28th and celebrates the diverse cultural backgrounds that contribute to the fabric of American society. The United States, known for having the highest number of immigrants, is home to over 45 million immigrants, making up 14 percent of the population. This day honors those who have started anew in the country, reflecting on the historical waves of immigration, including Irish fleeing famine and Jews escaping oppression. Typical customs include researching family histories to trace immigrant roots and visiting significant sites like Ellis Island, which welcomed millions of immigrants. Celebrations may also involve exploring neighborhoods that represent various immigrant communities, such as Chinatown and Little Italy.