Yes, Anglo Saxon Protestants made this nation what it is with many of the attitudes and sensibilities they brought from Great Britain and other North European nations. Look at the mess that Catholic Spain made of Latin America.
Many immigrants and children of immigrants, Catholic and Jewish adopted these Anglo attitudes and shucked off much of their Old World thinking.
People don't want to immigrate to Catholic founded Latin America and Mexico, Central America. People want to immigrate to Anglo Protestant founded America, Canada, Australia, New Zealand.