it took awhile for Irish and Italians immigrants to assimilate in America, but they did. But then they came from a Christian heritage.
There is also another factor that I heard a sociology prof talk about: namely, when immigrants came in past decades they settled in communities of people who had preceeded them from their countries. Those who had been here awhile immediately began to instruct and inform the new arrivals about the correct way to behave here - such as speak English and not throw the slop from the second story window.
Unfortunately, the current problem involves people who are committed to NOT assimilating into their 'new country' but rather believe they have a God-directed mission to CHANGE our country. There is a big difference in these philosophies.
That's a good point. Islam is a relentlessly offensive (as in the opposite of defensive) religion. It is practically the only trait it shares with Christianity.
100 years ago Americans believed their nation was the greatest one on earth. Now we have the radical left to contend with, which believes America is inherently evil and racist, thus new immigrants ought not to assimilate, and to ask them to do so is racist and oppressive.